CN108659859B - Liquid crystal composition having positive dielectric anisotropy and display device thereof - Google Patents
Liquid crystal composition having positive dielectric anisotropy and display device thereof Download PDFInfo
- Publication number
- CN108659859B CN108659859B CN201710204018.7A CN201710204018A CN108659859B CN 108659859 B CN108659859 B CN 108659859B CN 201710204018 A CN201710204018 A CN 201710204018A CN 108659859 B CN108659859 B CN 108659859B
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- crystal composition
- formula
- carbon atoms
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Abstract
The invention discloses a liquid crystal composition with positive dielectric anisotropy, which comprises the following components: one or more compounds of formula (I); one or more compounds of formula II; and one or more compounds of formula III. The invention also discloses a liquid crystal display device comprising the liquid crystal composition. The liquid crystal composition provided by the invention has the characteristics of higher clearing point, smaller rotary viscosity, fast response, small DV/DT at high temperature, good low-temperature intersolubility and the like, is particularly suitable for liquid crystal display elements driven by active matrix thin film transistors (AM-TFT), and is particularly suitable for display elements in severe working environments, such as vehicle-mounted display and the like.
Description
Technical Field
The invention relates to the field of liquid crystal materials, in particular to a liquid crystal composition with positive dielectric anisotropy and a display device thereof.
Background
Liquid crystal display elements are used in various household electric appliances such as watches and calculators, measuring instruments, automobile panels, word processors, computers, printers, televisions, and the like. The display mode is classified into PC (phase change), TN (twisted nematic), STN (super twisted nematic), ECB (electrically controlled birefringence), OCB (optically compensated bend), IPS (in-plane switching), VA (vertical alignment), and the like, according to the type of the display mode. The driving method of the element is classified into a PM (passive matrix) type and an AM (active matrix) type. PM is classified into static (static) and multiplex (multiplex) types. AM is classified into a TFT (thin film transistor), an MIM (metal insulator metal), and the like. The types of TFTs are amorphous silicon (amorphous silicon) and polycrystalline silicon (polysilicon). The latter is classified into a high temperature type and a low temperature type according to a manufacturing process. Liquid crystal display elements are classified into a reflection type using natural light, a transmission type using backlight, and a semi-transmission type using both light sources of natural light and backlight, depending on the type of light source.
Liquid crystal materials need to have suitably high dielectric anisotropy, optical anisotropy, and good low-temperature mutual solubility and thermal stability. In addition, the liquid crystal material should also have low viscosity and short response time, low threshold voltage and high contrast. The temperature range of the nematic phase is associated with the operating temperature range of the element. The upper limit temperature of the nematic phase is preferably 70 ℃ or higher, and the lower limit temperature of the nematic phase is preferably-10 ℃ or lower. The viscosity of the composition correlates to the response time of the element. In order to display animation in the element, it is preferable that the response time of the element is short. Therefore, it is preferable that the viscosity of the composition is small, and it is more preferable that the viscosity of the composition is small at a low temperature.
A liquid crystal display element containing a liquid crystal composition having a large absolute value of dielectric anisotropy can reduce the base voltage value, reduce the driving voltage, and further reduce the power consumption.
The liquid crystal display element containing the liquid crystal composition with lower threshold voltage can effectively reduce the power consumption of display, and has longer endurance time particularly in consumables and portable electronic products such as mobile phones and tablet computers.
The liquid crystal composition with low viscosity can improve the response speed of the liquid crystal display element. When the response speed of the liquid crystal display element is high, the liquid crystal display element is applicable to animation display. In addition, when the liquid crystal composition is injected into the cell of the liquid crystal display device, the injection time can be shortened, and the workability can be improved.
The prior art discloses a liquid crystal composition with lower power consumption and faster response, such as patent document CN102858918A, but the liquid crystal composition in the prior art has the problems of environmental protection (such as use of chlorine-containing compounds), short service life (such as poor UV or thermal stability), low contrast (such as whitening of a display screen under sunlight), and incapability of balancing the performance requirements of proper optical anisotropy, proper dielectric anisotropy, high voltage holding ratio, UV resistance stability and high temperature stability in liquid crystal televisions, tablet computers, and the like, and cannot simultaneously meet all indexes.
From the preparation angle of the liquid crystal material, various performances of the liquid crystal material are mutually influenced by the influence, and other performances may be changed by the improvement of a certain performance index. Therefore, creative efforts are often required to prepare liquid crystal materials having suitable properties in all aspects.
The liquid crystal material is an important component of the liquid crystal display, and the liquid crystal display has great market demand at present, is mostly used in electronic and electric products, but has a short life cycle. The problem of waste pollution naturally exists in a short life cycle, and under the condition that the current green environmental protection problem is increasingly emphasized by various social circles, if the problem can be controlled from a source, namely, an environment-friendly green material is selected in the modulation process of the liquid crystal material, the environmental cost for treating the waste liquid crystal display can be greatly reduced. Therefore, creative labor is often needed to prepare the liquid crystal material with proper performance in all aspects, economy and environmental protection.
Disclosure of Invention
The purpose of the invention is as follows: in view of the defects of the prior art, the present invention aims to provide a liquid crystal composition with positive dielectric anisotropy, which has the advantages of high clear point, good low-temperature intersolubility, small viscosity, fast response, small VT shift (DV/DT) at high temperature, etc., and further, a liquid crystal display device comprising the liquid crystal composition.
The technical scheme of the invention is as follows:
a liquid crystal composition of positive dielectric anisotropy, the liquid crystal composition comprising:
one or more compounds of formula (I)
One or more compounds of the general formula II
one or more compounds of the formula III
Wherein the content of the first and second substances,
R1and R2Each independently represents H, straight-chain alkyl or alkoxy containing 1 to 10 carbon atoms, alkenyl or alkenyloxy containing 2 to 10 carbon atoms, cyclobutyl, cyclopentyl;
R3denotes H, F, straight chain alkyl or alkoxy containing 1 to 10 carbon atoms, alkenyl or alkenyloxy containing 2 to 10 carbon atoms, wherein any H of said straight chain alkyl or alkoxy containing 1 to 10 carbon atoms and said alkenyl or alkenyloxy containing 2 to 10 carbon atoms can be substituted by F;
R4and R5Each independently represents H, a straight-chain alkyl or alkoxy group having 1 to 10 carbon atoms, an alkenyl or alkenyloxy group having 2 to 10 carbon atoms;
x represents H or F;
y represents H, F or methyl;
wherein the content of the compound of the general formula III in the liquid crystal composition is more than 1 wt%.
Further, the compound of formula i is selected from the group consisting of:
still further, the compound of formula I-1 is selected from the group consisting of:
the compound of formula I-2 is selected from the group consisting of:
the compound of formula I-3 is selected from the group consisting of:
the compound of formula I-4 is selected from the group consisting of:
in an embodiment of the present invention, it is preferred that the compound of formula I comprises 1-20% by weight of the total liquid crystal composition; more preferably, the compound of formula I is present in an amount of 1-15% by weight based on the total weight of the liquid crystal composition.
Further, the compound of formula ii is selected from the group consisting of:
preferably, the compound of formula ii is selected from the group consisting of:
in an embodiment of the present invention, it is preferable that the compound of formula II accounts for 1 to 30% of the total weight of the liquid crystal composition; more preferably, the compound of the general formula II accounts for 1-25% of the total weight of the liquid crystal composition.
Further, the compound of formula iii is selected from the group consisting of:
preferably, the compound of formula iii is selected from the group consisting of:
in an embodiment of the invention, the compound of the formula III is present in the liquid-crystal composition according to the invention in an amount of > 1% by weight.
Further, the liquid crystal composition further comprises one or more compounds of formula IV:
wherein the content of the first and second substances,
R6represents H, a straight-chain alkyl or alkoxy group having 1 to 10 carbon atoms, an alkenyl or alkenyloxy group having 2 to 10 carbon atoms;
ring (C)
And ring
Each independently represent
Z1And Z2Each independently represents a single bond, -CH2CH2-、-CH2O-、-CF2O-, -CH ═ CH-, or-C ≡ C-;
L1and L2Each independently represents H or F;
L3represents F, -CF3or-OCF3；
n represents 0, 1 or 2;
when n is 1, Z1And Z2Simultaneously being a single bond, a ring
Is composed of
When the following conditions a and b are not satisfied simultaneously:
a) ring (C)
Is composed of
b)L1And L2And is also H;
when n is 2, two rings
May be the same or different between, two Z2May be the same or different.
Still further, the compound of formula iv is selected from the group consisting of:
wherein the content of the first and second substances,
R61represents H, alkyl or alkoxy of 1 to 6 carbon atoms, alkenyl or alkenyloxy of 2 to 6 carbon atoms.
Further, the liquid crystal composition further comprises one or more compounds of formula v:
wherein the content of the first and second substances,
ring (C)
And ring
Each independently represent
R7And R8Each independently represents H, an alkyl or alkoxy group of 1 to 10 carbon atoms, an alkenyl or alkenyloxy group of 2 to 10 carbon atoms;
m represents 1 or 2, and when m is 2, two rings
May be the same or different.
Still further, said compound of formula v is selected from the group consisting of:
wherein the content of the first and second substances,
R71and R81The same or different, each independently represents H, alkyl or alkoxy of 1-6 carbon atoms, alkenyl or alkenyloxy of 2-6 carbon atoms.
Still further, said compound of formula V-1 is selected from the group consisting of:
the compound of formula V-2 is selected from the group consisting of:
the compound of formula V-3 is selected from the group consisting of:
the compound of formula V-4 is selected from the group consisting of:
the compound of formula V-5 is selected from the group consisting of:
further, the liquid crystal composition may further comprise one or more additives known to the person skilled in the art and described in the literature.
The stabilizers which may be added to the mixtures according to the invention are mentioned below, for example.
Preferably, the stabilizer is selected from the group consisting of the stabilizers shown below.
In the embodiment of the present invention, it is preferable that the stabilizer accounts for 0 to 5% by weight of the total weight of the liquid crystal composition; more preferably, the stabilizer accounts for 0-1% of the total weight of the liquid crystal composition; as a particularly preferred scheme, the stabilizing agent accounts for 0.01-0.1% of the total weight of the liquid crystal composition.
In another aspect, the invention further provides a liquid crystal display comprising the liquid crystal composition provided by the invention.
Has the advantages that:
the liquid crystal composition provided by the invention has the advantages of high clearing point, good low-temperature intersolubility, small viscosity, quick response and small VT drift (DV/DT) at high temperature, is particularly suitable for liquid crystal display elements driven by active matrix thin film transistors (AM-TFT), and is particularly suitable for display elements in severe working environments, such as vehicle-mounted display and the like.
Detailed Description
The invention will be illustrated below with reference to specific embodiments. It should be noted that the following examples are illustrative of the present invention, and are not intended to limit the present invention. Other combinations and various modifications within the spirit or scope of the present invention may be made without departing from the spirit or scope of the present invention.
In the present invention, the proportions are by weight and all temperatures are in degrees centigrade, unless otherwise specified.
For convenience of expression, in the following examples, the group structure of the liquid crystal composition is represented by the code listed in Table 1:
TABLE 1 radical structural code of liquid crystal compounds
Compounds of the following formula are exemplified:
the structural formula is represented by the code listed in Table 1, and can be expressed as: nCCGF, wherein n in the code represents the number of C atoms of the left alkyl group, for example, n is 3, namely, the alkyl group is-C3H7(ii) a C in the code represents cyclohexane, G represents 2-fluoro-1, 4-phenylene and F represents fluorine.
The abbreviated codes of the test items in the following examples are as follows:
cp (. degree. C.) clearing Point (nematic-isotropic phase transition temperature)
Δ n optical anisotropy (589nm, 25 ℃ C.)
Delta epsilon dielectric anisotropy (1KHz, 25 ℃ C.)
Gamma 1 rotational viscosity (mPas at 25 ℃ C.)
Low temperature storage time at t-40 ℃ (day, at-40 ℃)
DV/DT high and low temperature voltage change rate (%, high temperature: 65 ℃, Normal temperature: 25 ℃)
Wherein the content of the first and second substances,
the optical anisotropy was measured using an Abbe refractometer under a sodium lamp (589nm) light source at 25 ℃.
Δε＝ε‖-ε⊥Wherein, epsilon‖Is a dielectric constant parallel to the molecular axis,. epsilon⊥For the dielectric constant perpendicular to the molecular axis, test conditions: the test box is TN90 type at 25 deg.C and 1KHz, and has a thickness of 7 μm.
Gamma 1 is obtained by testing a TOYO6254 type liquid crystal physical property evaluation system; the test temperature was 25 ℃ and the test voltage was 90V.
DV/DT test conditions: the test frequency is 60Hz, the test waveform is square wave, and the test instrument is DMS 505.
The components used in the following examples can be synthesized by a known method or obtained commercially. These synthesis techniques are conventional, and the resulting liquid crystal compounds were tested to meet the standards for electronic compounds.
Liquid crystal compositions were prepared according to the compounding ratios of the liquid crystal compositions specified in the following examples. The liquid crystal composition is prepared according to the conventional method in the field, such as heating, ultrasonic wave, suspension and the like, and is mixed according to the specified proportion.
Liquid crystal compositions given in the following examples were prepared and studied. The composition of each liquid crystal composition and the results of the performance parameter test thereof are shown below.
Comparative example 1
The liquid crystal composition of comparative example 1, which was filled between two substrates of a liquid crystal display and subjected to a performance test, was prepared with each compound and weight percentage as listed in table 2, and the test data are shown in the following table:
TABLE 2 liquid crystal composition formulations and their test properties
Example 1
The liquid crystal composition of example 1 was prepared according to the compounds and weight percentages listed in table 3, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 3 liquid crystal composition formula and its test performance
Example 2
The liquid crystal composition of example 2 was prepared according to the compounds and weight percentages listed in table 4, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 4 liquid crystal composition formula and its test performance
Example 3
The liquid crystal composition of example 3 was prepared according to the compounds and weight percentages listed in table 5, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 5 liquid crystal composition formulations and their test properties
Example 4
The liquid crystal composition of example 4 was prepared according to the compounds and weight percentages listed in table 6, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 6 liquid crystal composition formula and its test performance
Comparative example 2
The liquid crystal composition of comparative example 2, which was filled between two substrates of a liquid crystal display and subjected to a performance test, was prepared with each compound and weight percentage as listed in table 7, and the test data are shown in the following table:
TABLE 7 liquid crystal composition formulations and their test properties
Example 5
The liquid crystal composition of example 5 was prepared according to the compounds and weight percentages listed in table 8, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 8 liquid crystal composition formulations and their test properties
Example 6
The liquid crystal composition of example 6 was prepared according to the compounds and weight percentages listed in table 9, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 9 liquid crystal composition formulations and their test properties
Example 7
The liquid crystal composition of example 7 was prepared according to the compounds and weight percentages listed in table 10, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 10 liquid crystal composition formulations and their test properties
Example 8
The liquid crystal composition of example 8 was prepared according to the compounds and weight percentages listed in table 11, and filled between two substrates of a liquid crystal display for performance testing, the test data are shown in the following table:
TABLE 11 liquid crystal composition formulations and their test properties
In order to highlight the beneficial effects of the liquid crystal composition of the present invention, the inventors selected a comparative example similar to the system of the embodiment of the present invention. The comparison of comparative example 1 with example 1, example 2, example 3 and example 4 shows that the VT shift (DV/DT) of the liquid crystal composition provided by the invention is smaller at high temperature, while the comparison of comparative example 2 with example 5, example 6, example 7 and example 8 shows that the low-temperature intersolubility of the liquid crystal composition provided by the invention is better. The liquid crystal composition provided by the invention has the characteristics of higher clearing point, smaller rotational viscosity, fast response, small VT drift (DV/DT) at high temperature, good low-temperature intersolubility and the like, is particularly suitable for liquid crystal display elements driven by active matrix thin film transistors (AM-TFT), and is particularly suitable for display elements in severe working environments, such as vehicle-mounted display and the like.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and equivalent changes and modifications made according to the spirit of the present invention should be covered thereby.
Claims (7)
1. A liquid crystal composition of positive dielectric anisotropy, comprising:
two or more compounds of formula (I)
Two or more compounds of the formula II
One or more compounds of the formula III
One or more compounds of the formula IV, and
one or more compounds of formula v:
wherein the content of the first and second substances,
R1and R2Each independently represents H, straight-chain alkyl or alkoxy containing 1 to 10 carbon atoms, alkenyl or alkenyloxy containing 2 to 10 carbon atoms, cyclobutyl, cyclopentyl;
R3denotes H, F, straight chain alkyl or alkoxy containing 1 to 10 carbon atoms, alkenyl or alkenyloxy containing 2 to 10 carbon atoms, wherein any H of said straight chain alkyl or alkoxy containing 1 to 10 carbon atoms and said alkenyl or alkenyloxy containing 2 to 10 carbon atoms can be substituted by F;
R4and R5Each independently represents H, a straight-chain alkyl or alkoxy group having 1 to 10 carbon atoms, an alkenyl or alkenyloxy group having 2 to 10 carbon atoms;
x represents H or F;
y represents H, F or methyl;
ring (C)
And ring
Each independently represent
R7And R8Each independently represents H, an alkyl or alkoxy group of 1 to 10 carbon atoms, an alkenyl or alkenyloxy group of 2 to 10 carbon atoms;
m represents 1 or 2, and when m is 2, two rings
May be the same or different;
wherein the content of the compound of the general formula III in the liquid crystal composition is more than 1 wt%;
the compound of formula iv is selected from the group consisting of:
wherein R is61Represents H, alkyl or alkoxy of 1 to 6 carbon atoms, alkenyl or alkenyloxy of 2 to 6 carbon atoms;
wherein the compound of formula IV is present in the liquid crystal composition in an amount of 16, 17, 18, 27, 28, or 30 wt%; and is
Wherein the compound of formula V is present in the liquid crystal composition in an amount of 53.5 wt%, 55.0 wt%, 55.5 wt%, 57.5 wt%, 60.0 wt%, 62.5 wt%, or 63.5 wt%.
2. The liquid crystal composition of positive dielectric anisotropy according to claim 1, characterized in that the compound of general formula i is selected from the group consisting of:
3. the liquid crystal composition of positive dielectric anisotropy according to claim 2, characterized in that the compound of general formula i-1 is selected from the group consisting of:
the compound of formula I-2 is selected from the group consisting of:
the compound of formula I-3 is selected from the group consisting of:
the compound of formula I-4 is selected from the group consisting of:
4. the liquid crystal composition of positive dielectric anisotropy according to claim 1, characterized in that the compound of formula iii is selected from the group consisting of:
5. the liquid crystal composition of positive dielectric anisotropy according to claim 1, characterized in that the compound of formula v is selected from the group consisting of:
wherein the content of the first and second substances,
R71and R81The same or different, each independently represents H, alkyl or alkoxy of 1-6 carbon atoms, alkenyl or alkenyloxy of 2-6 carbon atoms.
6. The liquid crystal composition of positive dielectric anisotropy according to any one of claims 1 to 5, further comprising one or more additives.
7. A liquid crystal display comprising the liquid crystal composition of positive dielectric anisotropy according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710204018.7A CN108659859B (en) | 2017-03-30 | 2017-03-30 | Liquid crystal composition having positive dielectric anisotropy and display device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710204018.7A CN108659859B (en) | 2017-03-30 | 2017-03-30 | Liquid crystal composition having positive dielectric anisotropy and display device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108659859A CN108659859A (en) | 2018-10-16 |
| CN108659859B true CN108659859B (en) | 2021-10-08 |
Family
ID=63785613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710204018.7A Active CN108659859B (en) | 2017-03-30 | 2017-03-30 | Liquid crystal composition having positive dielectric anisotropy and display device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108659859B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115707756B (en) * | 2021-08-20 | 2024-02-13 | 江苏和成显示科技有限公司 | Liquid crystal composition and application thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1806028A (en) * | 2003-05-27 | 2006-07-19 | 默克专利股份有限公司 | Liquid-crystalline compounds having a tetrahydropyran ring |
| CN103275735A (en) * | 2013-05-13 | 2013-09-04 | 石家庄诚志永华显示材料有限公司 | Dielectric positive liquid crystal composition |
| CN103351873A (en) * | 2013-06-25 | 2013-10-16 | 江苏和成显示科技股份有限公司 | Liquid crystal composition and liquid crystal display device thereof |
| CN104024380A (en) * | 2012-11-28 | 2014-09-03 | Dic株式会社 | Nematic liquid crystal composition and liquid crystal display element using same |
| CN104479689A (en) * | 2014-12-29 | 2015-04-01 | 石家庄诚志永华显示材料有限公司 | Liquid crystal composition |
| CN106433691A (en) * | 2015-08-07 | 2017-02-22 | 默克专利股份有限公司 | Liquid-crystalline medium |
| CN107586546A (en) * | 2016-07-08 | 2018-01-16 | 江苏和成显示科技股份有限公司 | Liquid-crystal composition and display device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9028714B2 (en) * | 2013-08-30 | 2015-05-12 | Shijiazhuang Chengzhi Yonghua Display Materials Co., Ltd. | Liquid crystal compound preparation and application |
| CN105531352A (en) * | 2013-09-12 | 2016-04-27 | Dic株式会社 | Composition and liquid crystal display element using same |
| CN103468271B (en) * | 2013-09-25 | 2015-05-20 | 石家庄诚志永华显示材料有限公司 | Positive dielectric anisotropy liquid crystal composition |
| CN103740377B (en) * | 2013-12-27 | 2015-05-20 | 北京八亿时空液晶科技股份有限公司 | Liquid crystal composition and application thereof |
| CN107614661A (en) * | 2015-06-12 | 2018-01-19 | Dic株式会社 | Composition and use its liquid crystal display cells |
| CN107227159A (en) * | 2016-03-24 | 2017-10-03 | 北京八亿时空液晶科技股份有限公司 | One kind has big dielectric anisotropy liquid crystal composition and its application |
| CN107674686B (en) * | 2016-08-02 | 2021-05-04 | 石家庄诚志永华显示材料有限公司 | Liquid crystal composition |
| CN107674687B (en) * | 2016-08-02 | 2021-05-04 | 石家庄诚志永华显示材料有限公司 | Liquid crystal composition and liquid crystal display element or liquid crystal display |
| EP3299438B1 (en) * | 2016-09-23 | 2020-01-15 | Merck Patent GmbH | Liquid-crystalline medium and liquid-crystal display comprising the same |
-
2017
- 2017-03-30 CN CN201710204018.7A patent/CN108659859B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1806028A (en) * | 2003-05-27 | 2006-07-19 | 默克专利股份有限公司 | Liquid-crystalline compounds having a tetrahydropyran ring |
| CN104024380A (en) * | 2012-11-28 | 2014-09-03 | Dic株式会社 | Nematic liquid crystal composition and liquid crystal display element using same |
| CN103275735A (en) * | 2013-05-13 | 2013-09-04 | 石家庄诚志永华显示材料有限公司 | Dielectric positive liquid crystal composition |
| CN103351873A (en) * | 2013-06-25 | 2013-10-16 | 江苏和成显示科技股份有限公司 | Liquid crystal composition and liquid crystal display device thereof |
| CN104479689A (en) * | 2014-12-29 | 2015-04-01 | 石家庄诚志永华显示材料有限公司 | Liquid crystal composition |
| CN106433691A (en) * | 2015-08-07 | 2017-02-22 | 默克专利股份有限公司 | Liquid-crystalline medium |
| CN107586546A (en) * | 2016-07-08 | 2018-01-16 | 江苏和成显示科技股份有限公司 | Liquid-crystal composition and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108659859A (en) | 2018-10-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108659857B (en) | Liquid crystal composition having positive dielectric anisotropy and display device thereof | |
| CN108659858B (en) | Liquid crystal composition having positive dielectric anisotropy and display device thereof | |
| KR20190100969A (en) | Liquid crystal composition and its display device | |
| CN109575943B (en) | Liquid crystal composition and liquid crystal display device thereof | |
| WO2018192474A1 (en) | Liquid crystal composition and display device thereof | |
| CN109575942B (en) | Liquid crystal composition and liquid crystal display device thereof | |
| CN111117659A (en) | Liquid crystal composition and display device thereof | |
| CN108659856B (en) | Liquid crystal composition having positive dielectric anisotropy and display device thereof | |
| TWI711691B (en) | Liquid crystal composition and its display device | |
| CN113667493A (en) | Liquid crystal composition and liquid crystal display device | |
| CN108659859B (en) | Liquid crystal composition having positive dielectric anisotropy and display device thereof | |
| CN109135764B (en) | Liquid crystal composition with negative dielectric anisotropy and liquid crystal display device | |
| CN112538357B (en) | Liquid crystal composition and liquid crystal display device thereof | |
| CN111117655B (en) | Liquid crystal composition and display device thereof | |
| CN111117654B (en) | Liquid crystal composition and display device thereof | |
| CN109575946B (en) | Liquid crystal composition and liquid crystal display device thereof | |
| CN111117647B (en) | Liquid crystal composition and display device thereof | |
| CN112724987B (en) | Liquid crystal composition having positive dielectric anisotropy and liquid crystal display device thereof | |
| CN111117652B (en) | Liquid crystal composition and display device thereof | |
| CN112724986B (en) | Liquid crystal composition having positive dielectric anisotropy and liquid crystal display device thereof | |
| CN111117648B (en) | Liquid crystal composition and display device thereof | |
| CN112048319B (en) | Liquid crystal composition and display device thereof | |
| CN112048320B (en) | Liquid crystal composition and display device thereof | |
| CN112048314B (en) | Liquid crystal composition and display device thereof | |
| CN109575951B (en) | Liquid crystal composition and liquid crystal display device thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 2/F, Sino Japan Cooperation Innovation Park, No. 16 Zidan Road, Qinhuai District, Nanjing, Jiangsu Province, 210014 Patentee after: JIANGSU HECHENG DISPLAY TECHNOLOGY Co.,Ltd. Address before: 212212 east side of Yangzhong Yangtze River Bridge, Yangzhong City, Jiangsu Province Patentee before: JIANGSU HECHENG DISPLAY TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder |