CN113789184A - Negative large-refractive-index liquid crystal composition and application thereof - Google Patents
Negative large-refractive-index liquid crystal composition and application thereof Download PDFInfo
- Publication number
- CN113789184A CN113789184A CN202111188901.4A CN202111188901A CN113789184A CN 113789184 A CN113789184 A CN 113789184A CN 202111188901 A CN202111188901 A CN 202111188901A CN 113789184 A CN113789184 A CN 113789184A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- component
- crystal composition
- negative
- index liquid
- 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.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 93
- 239000000203 mixture Substances 0.000 title claims abstract description 79
- 150000001875 compounds Chemical class 0.000 claims abstract description 21
- 125000004432 carbon atom Chemical group C* 0.000 claims description 16
- 125000003545 alkoxy group Chemical group 0.000 claims description 7
- 125000000217 alkyl group Chemical group 0.000 claims description 7
- 125000003342 alkenyl group Chemical group 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract description 6
- 230000035515 penetration Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 3
- 238000011056 performance test Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 210000002858 crystal cell Anatomy 0.000 description 6
- 230000000704 physical effect Effects 0.000 description 6
- 239000012071 phase Substances 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13712—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering the liquid crystal having negative dielectric anisotropy
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal Substances (AREA)
Abstract
The invention relates to a negative large-refractive-index liquid crystal composition and application thereof, belonging to the technical field of liquid crystal materials. The negative large-refractive-index liquid crystal composition comprises A, B, C, D four compound components in percentage by weight: 42-55% of component A, 35-45% of component B, 10-18% of component C and 0-5% of component D. The liquid crystal composition has large negative dielectric anisotropy and large optical anisotropy, has a wide nematic phase temperature range and excellent performance, and is very suitable for various negative display modes, including VA, IPS, FFS and other display modes. The invention makes the dielectric constant and liquid crystal birefringence of the liquid crystal composition reach the required value by selecting four liquid crystal compounds and the proportion thereof, thereby the liquid crystal display product adopting the liquid crystal composition has faster response time and higher penetration rate.
Description
Technical Field
The invention relates to a negative large-refractive-index liquid crystal composition and application thereof, wherein the liquid crystal composition is suitable for various negative display modes including VA, IPS, FFS and other display modes, and belongs to the technical field of liquid crystal materials.
Background
Liquid crystal displays were first developed in the 70's of the 20 th century as electronic computers and digital clock displays, and with the development and progress of technology, liquid crystal displays are now spread throughout daily life.
Negative liquid crystals, which were proposed at the earliest in the last 80 years, were mainly used for VA mode, which has very excellent contrast properties but has a significant response time problem. How to obtain a faster response time at the same driving voltage is a more desirable goal. Meanwhile, with the improvement of living standard of people, high-quality image display becomes more important, for example, the resolution of the current mainstream product is 4K, but with the further development of display technology, 8K display is already proposed, and a part of products already enter the market in small batch. The 8K display has a reduced pixel aperture ratio due to a higher resolution, and thus the transmittance of light is reduced, and when the product is to have the same brightness as the 4K product, a higher backlight luminance is required, which causes an increase in backlight power consumption, and it is necessary to improve the performance of the liquid crystal material in order to increase the transmittance.
Disclosure of Invention
The invention aims to provide a negative high-refraction liquid crystal composition, which can reduce the response time of a liquid crystal display product and improve the transmittance.
The liquid crystal composition has a larger dielectric constant through the design of the formula, so that a photoelectric curve moves leftwards compared with the traditional liquid crystal composition, and the liquid crystal composition has higher penetration rate under the same driving voltage. For the improvement of the response time, it is very difficult to increase the response speed only by improving the liquid crystal properties. According to the formula of the response time, the influence of the thickness of the liquid crystal box on the response time is the largest. Reducing the box thickness is the most practical and effective approach by improving the device. When the cell thickness is reduced, the refractive index anisotropy of the liquid crystal must be correspondingly increased in consideration of the viewing angle, brightness, display quality, and the like. By designing parameters such as dielectric constant, liquid crystal birefringence and the like of the liquid crystal composition, the liquid crystal display product has the advantages of short response time and high penetration rate.
Another object of the present invention is to provide the application of the above negative large refractive liquid crystal composition, the liquid crystal composition of the present invention has large negative dielectric anisotropy and large optical anisotropy, has a wide nematic phase temperature range, and is excellent in performance, and is very suitable for application in liquid crystal display devices of various negative display modes, including VA, IPS, FFS and other display modes.
In order to achieve the purpose, the invention adopts the following technical scheme:
a negative large-refractive-index liquid crystal composition has large negative dielectric anisotropy and large optical anisotropy, has a wide nematic phase temperature range, can be applied to a negative display mode, and comprises four compound components of a general formula A, B, C, D in percentage by weight: 42-55% of component A, 35-45% of component B, 10-18% of component C and 0-5% of component D, wherein the sum of the weight percentages of the components is 100%;
the component A is one or more of compounds shown in the following general formula:
wherein R is1、R2Each independently represents a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 5 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms;
A1、A2each independently represent
Or
Y1、Y2Each independently represents F or H, and when Y1Is H or Y2Is also H, when Y1Is F or Y2Is also F;
the component B is one or more of compounds shown in the following general formula:
wherein R is3、R4Each independently represents a linear alkyl group having 1 to 5 carbon atoms or a linear alkoxy group having 1 to 5 carbon atoms;
A3to represent
Or
Y3、Y4Each independently represents F or H, and when Y3Is H or Y4Is also H, when Y3Is F or Y4Is also F;
the component C is one or more of compounds shown in the following general formula:
wherein R is5、R6Each independently represents a straight-chain alkyl group having 1 to 5 carbon atoms or a straight-chain alkoxy group having 1 to 5 carbon atoms, and n represents 1 or 2;
the component D is one or more of compounds shown in the following general formula:
wherein R is7、R8Independently represents a linear alkyl group having 2 to 5 carbon atoms or a linear alkoxy group having 2 to 5 carbon atoms;
Y5represents F or H.
The component A is a mixture consisting of one or more of the following compounds A-1 to A-34:
the component B is a mixture consisting of one or more of the following compounds B-1 to B-25:
the component C is a mixture consisting of one or more of the following compounds C-1 to C-24:
the component D is a mixture consisting of one or more of the following compounds D-1 to D-20:
in the negative large-refractive-index liquid crystal composition, the component A accounts for 43-50 percent by weight, and is more preferably 43-48 percent by weight; the component B is 35 to 43 percent, and more preferably 35 to 38 percent; the component C is 10-16%, and more preferably 12-16%; the D component is 0 to 4%, more preferably 1 to 5%, and still more preferably 1 to 4%.
The liquid crystal composition has negative dielectric anisotropy of-3.5 to-3.9, optical anisotropy of over 0.115 and nematic phase temperature of 80-100 deg.c.
The liquid crystal composition of the present invention can be suitably used in a liquid crystal display device of a negative type display mode including VA, IPS, FFS and the like.
The invention has the advantages that:
the liquid crystal composition has large negative dielectric anisotropy and large optical anisotropy, has a wide nematic phase temperature range and excellent performance, and is very suitable for various negative display modes, including VA, IPS, FFS and other display modes.
The invention makes the dielectric constant and liquid crystal birefringence of the liquid crystal composition reach the required value by selecting four liquid crystal compounds and the proportion thereof, thereby the liquid crystal display product adopting the liquid crystal composition has faster response time and higher penetration rate.
Detailed Description
In the invention, the liquid crystal composition is prepared by the following method: the method comprises the steps of weighing each monomer in the liquid crystal composition according to weight percentage by using a balance, adding liquid and then adding solid in an adding sequence, wherein the adding of the solid has no specific requirement, heating and stirring at 100 ℃ to enable all components to be melted and mixed uniformly, filtering, degassing and finally packaging to obtain a target sample. Alternatively, solutions of the components in an organic solvent, such as acetone, chloroform, methanol, etc., may be mixed, and after thorough mixing, the solvent may be removed, such as by distillation, etc., followed by filtration, degassing, and packaging to obtain the desired sample.
In the present invention, the components of the liquid crystal composition are in weight percent, and all temperatures are given in degrees celsius.
All items were tested at room temperature (25 ℃) to give data.
In the examples, the physical parameter characteristics tested were as follows:
TNI: nematic phase-isotropic liquid phase transition temperature (° c);
Δ n: refractive index anisotropy at 25 degrees Celsius (C.);
Δ ε: dielectric anisotropy at 25 degrees Celsius (C.);
wherein, Δ ═ | —. ∈ | —, ±, where | | | is the dielectric constant parallel to the molecular axis, ∈ ± | is the dielectric constant perpendicular to the molecular axis, the test conditions were: 25 ℃ and 1 KHz;
no: refractive index of ordinary rays (589nm, 25 ℃);
ne: refractive index of extraordinary ray (589nm, 25 ℃).
The following are some representative examples, but the present invention is not limited to these liquid crystal compositions.
Example 1:
according to the composition of the liquid crystal composition in Table 1, the liquid crystal composition was prepared by the above-mentioned method according to the present invention, and the liquid crystal composition was filled in a 3.5 μ VA liquid crystal cell to perform the performance test, and the results of the measured physical property parameters are shown in Table 1.
Table 1 composition of liquid crystal composition of example 1 and performance test results thereof
Example 2:
according to the composition of the liquid crystal composition in Table 2, the liquid crystal composition was prepared by the above-mentioned method according to the present invention, and the liquid crystal composition was filled in a 3.5 μ VA liquid crystal cell to perform the performance test, and the results of the measured physical property parameters are shown in Table 2.
Table 2 composition of liquid crystal composition of example 2 and performance test results thereof
Example 3:
according to the composition of the liquid crystal composition in Table 3, the liquid crystal composition was prepared by the above-mentioned method according to the present invention, and the liquid crystal composition was filled in a 3.5 μ VA liquid crystal cell to perform the performance test, and the results of the measured physical property parameters are shown in Table 3.
Table 3 composition of liquid crystal composition of example 3 and performance test results thereof
Example 4:
according to the composition of the liquid crystal composition in Table 4, the liquid crystal composition was prepared by the above-mentioned method according to the present invention, and the liquid crystal composition was filled in a 3.5 μ VA liquid crystal cell to perform the performance test, and the results of the measured physical property parameters are shown in Table 4.
Table 4 example 4 composition of liquid crystal composition and results of performance test thereof
Example 5:
according to the composition of the liquid crystal composition in Table 5, the liquid crystal composition was prepared by the above-mentioned method according to the present invention, and the liquid crystal composition was filled in a 3.5 μ VA liquid crystal cell to perform the performance test, and the results of the measured physical property parameters are shown in Table 5.
Table 5 composition of liquid crystal composition of example 5 and performance test results thereof
Example 6:
according to the composition of the liquid crystal composition in Table 6, the liquid crystal composition was prepared by the above-mentioned method according to the present invention, and the liquid crystal composition was filled in a 3.5 μ VA liquid crystal cell to perform the performance test, and the results of the measured physical property parameters are shown in Table 6.
Table 6 composition of liquid crystal composition of example 6 and performance test results thereof
The liquid crystal composition has large negative dielectric anisotropy and large optical anisotropy, has a wider nematic phase temperature range, and can obviously shorten the response time and improve the penetration rate of a liquid crystal display device prepared by adopting the liquid crystal composition.
Claims (9)
1. A negative large-refractive-index liquid crystal composition is characterized in that: comprising A, B, C, D four compound components, the weight percentage of which are respectively: 42-55% of component A, 35-45% of component B, 10-18% of component C and 0-5% of component D;
the component A is a compound shown as the following general formula:
the component B is a compound shown as the following general formula:
the component C is a compound shown as the following general formula:
the component D is a compound shown as the following general formula:
wherein R is1、R2Each independently represents a linear alkyl group having 1 to 5 carbon atoms, a linear alkoxy group having 1 to 5 carbon atoms, or an alkenyl group having 2 to 5 carbon atoms; r3、R4、R5、R6Each independently represents a linear alkyl group having 1 to 5 carbon atoms or a linear alkoxy group having 1 to 5 carbon atoms; r7、R8Independently represents a linear alkyl group having 2 to 5 carbon atoms or a linear alkoxy group having 2 to 5 carbon atoms;
A1、A2、A3each independently represent
Or
Y1、Y2、Y3、Y4、Y5Each independently represents F or H, and when Y1Is H or Y2Is also H, when Y1Is F or Y2Is also F; when Y is3Is H or Y4Is also H, when Y3Is F or Y4Is also F;
n represents 1 or 2.
2. The negative large refractive index liquid crystal composition according to claim 1, wherein: the component A is one or more of compounds A-1 to A-34:
3. the negative large refractive index liquid crystal composition according to claim 1, wherein: the component B is one or more of compounds B-1 to B-25:
4. the negative large refractive index liquid crystal composition according to claim 1, wherein: the C component is one or more of compounds C-1 to C-24:
5. the negative large refractive index liquid crystal composition according to claim 1, wherein: the component D is one or more of compounds D-1 to D-20:
6. the negative large refractive index liquid crystal composition according to claim 1, wherein: in the negative high-refractive-index liquid crystal composition, the component A is 43-50%, the component B is 35-43%, the component C is 10-16% and the component D is 0-4% in percentage by weight.
7. The negative large refractive index liquid crystal composition according to claim 6, wherein: in the negative high-refractive-index liquid crystal composition, the component A is 43-48 percent, the component B is 35-38 percent, the component C is 12-16 percent and the component D is 1-4 percent by weight.
8. Use of the negative large refractive index liquid crystal composition according to any one of claims 1 to 7 for producing a liquid crystal display device of negative display mode.
9. Use according to claim 8, characterized in that: the liquid crystal display device includes VA, IPS and FFS liquid crystal display devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111188901.4A CN113789184B (en) | 2021-10-12 | 2021-10-12 | Negative large refractive index liquid crystal composition and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111188901.4A CN113789184B (en) | 2021-10-12 | 2021-10-12 | Negative large refractive index liquid crystal composition and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113789184A true CN113789184A (en) | 2021-12-14 |
| CN113789184B CN113789184B (en) | 2023-11-10 |
Family
ID=78877900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111188901.4A Active CN113789184B (en) | 2021-10-12 | 2021-10-12 | Negative large refractive index liquid crystal composition and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113789184B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101072847A (en) * | 2004-12-15 | 2007-11-14 | 大日本油墨化学工业株式会社 | Nematic liquid crystal composition and liquid crystal display element using the same |
| CN102292412A (en) * | 2009-01-22 | 2011-12-21 | Jnc株式会社 | Liquid crystal composition and liquid crystal display device |
| CN102597167A (en) * | 2009-08-26 | 2012-07-18 | 捷恩智株式会社 | Liquid crystal composition and liquid crystal display element |
| CN103305233A (en) * | 2013-06-24 | 2013-09-18 | 北京八亿时空液晶科技股份有限公司 | Negative dielectric anisotropy liquid crystal composition and application thereof |
| CN108373923A (en) * | 2017-02-01 | 2018-08-07 | 捷恩智株式会社 | Liquid-crystal composition and application thereof, liquid crystal display element and stabilizing polymer alignment-type liquid crystal display device |
| CN109423304A (en) * | 2017-08-31 | 2019-03-05 | 北京八亿时空液晶科技股份有限公司 | A kind of negative dielectric nematic phase liquid crystal composition and its application |
| CN110872521A (en) * | 2018-08-30 | 2020-03-10 | 捷恩智株式会社 | Liquid crystal composition, liquid crystal display element and application of liquid crystal display element |
| CN111100654A (en) * | 2018-10-26 | 2020-05-05 | 捷恩智株式会社 | Liquid crystal composition, use thereof, and liquid crystal display element |
-
2021
- 2021-10-12 CN CN202111188901.4A patent/CN113789184B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101072847A (en) * | 2004-12-15 | 2007-11-14 | 大日本油墨化学工业株式会社 | Nematic liquid crystal composition and liquid crystal display element using the same |
| CN102292412A (en) * | 2009-01-22 | 2011-12-21 | Jnc株式会社 | Liquid crystal composition and liquid crystal display device |
| CN102597167A (en) * | 2009-08-26 | 2012-07-18 | 捷恩智株式会社 | Liquid crystal composition and liquid crystal display element |
| CN103305233A (en) * | 2013-06-24 | 2013-09-18 | 北京八亿时空液晶科技股份有限公司 | Negative dielectric anisotropy liquid crystal composition and application thereof |
| CN108373923A (en) * | 2017-02-01 | 2018-08-07 | 捷恩智株式会社 | Liquid-crystal composition and application thereof, liquid crystal display element and stabilizing polymer alignment-type liquid crystal display device |
| CN109423304A (en) * | 2017-08-31 | 2019-03-05 | 北京八亿时空液晶科技股份有限公司 | A kind of negative dielectric nematic phase liquid crystal composition and its application |
| CN110872521A (en) * | 2018-08-30 | 2020-03-10 | 捷恩智株式会社 | Liquid crystal composition, liquid crystal display element and application of liquid crystal display element |
| CN111100654A (en) * | 2018-10-26 | 2020-05-05 | 捷恩智株式会社 | Liquid crystal composition, use thereof, and liquid crystal display element |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113789184B (en) | 2023-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110577832A (en) | negative dielectric anisotropy liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN105647544B (en) | Negative dielectric anisotropy liquid crystal composition and its liquid crystal display element or liquid crystal display | |
| US10519377B1 (en) | Liquid crystal composition of negative monomer containing cyclopentyl cyclohexenyl and liquid crystal display element or liquid crystal display thereof | |
| CN110819360B (en) | Liquid crystal composition of cyclopentyl-containing cyclohexene-group negative monomer and liquid crystal display element thereof | |
| CN107267158A (en) | Negative dielectric anisotropy liquid crystal medium and its application containing cyclopropyl | |
| CN111440618B (en) | Low-refractive-index low-threshold negative dielectric anisotropy liquid crystal composition and application thereof | |
| CN110655927B (en) | Liquid crystal composition and liquid crystal display element or liquid crystal display | |
| TWI670363B (en) | Liquid crystal composition and application thereof | |
| KR20180041554A (en) | Positive dielectric liquid crystal composition | |
| CN103897708B (en) | A kind of positive dielectric anisotropy liquid crystal composition | |
| CN112940754A (en) | Negative liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN113667493A (en) | Liquid crystal composition and liquid crystal display device | |
| CN112940751A (en) | Liquid crystal composition, liquid crystal display element or liquid crystal display | |
| CN113773854B (en) | Liquid crystal composition with positive dielectric constant and application thereof | |
| CN113789184A (en) | Negative large-refractive-index liquid crystal composition and application thereof | |
| TW202000866A (en) | Liquid crystal composition and application thereof | |
| TWI645021B (en) | Liquid crystal medium containing 2,4-difluorophenyl compound and applications thereof | |
| CN104593013B (en) | A kind of liquid crystal media | |
| CN108690640A (en) | A kind of compound and liquid crystal media of the ring containing indenes | |
| TWI668298B (en) | Liquid crystal composition and application | |
| CN112574756B (en) | Liquid crystal composition and photoelectric display device | |
| CN112920809B (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN111748357B (en) | Liquid crystal composition and liquid crystal display element | |
| CN113122272A (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN111196928A (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display |
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 |