CN113320386B - Automobile full-liquid-crystal instrument panel with good low-temperature stability and high reliability - Google Patents
Automobile full-liquid-crystal instrument panel with good low-temperature stability and high reliability Download PDFInfo
- Publication number
- CN113320386B CN113320386B CN202110635710.1A CN202110635710A CN113320386B CN 113320386 B CN113320386 B CN 113320386B CN 202110635710 A CN202110635710 A CN 202110635710A CN 113320386 B CN113320386 B CN 113320386B
- Authority
- CN
- China
- Prior art keywords
- compound
- carbon atoms
- formula
- instrument panel
- liquid crystal
- 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
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 45
- 150000001875 compounds Chemical class 0.000 claims abstract description 46
- 239000000203 mixture Substances 0.000 claims abstract description 26
- 239000000758 substrate Substances 0.000 claims abstract description 17
- 239000012769 display material Substances 0.000 claims abstract description 14
- 239000000654 additive Substances 0.000 claims abstract description 12
- 230000000996 additive effect Effects 0.000 claims abstract description 11
- LMBFAGIMSUYTBN-MPZNNTNKSA-N teixobactin Chemical compound C([C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H](CCC(N)=O)C(=O)N[C@H]([C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H]1C(N[C@@H](C)C(=O)N[C@@H](C[C@@H]2NC(=N)NC2)C(=O)N[C@H](C(=O)O[C@H]1C)[C@@H](C)CC)=O)NC)C1=CC=CC=C1 LMBFAGIMSUYTBN-MPZNNTNKSA-N 0.000 claims abstract description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 48
- 125000003545 alkoxy group Chemical group 0.000 claims description 24
- 125000000217 alkyl group Chemical group 0.000 claims description 24
- 125000003342 alkenyl group Chemical group 0.000 claims description 13
- 239000004642 Polyimide Substances 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 238000005286 illumination Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 8
- 210000004027 cell Anatomy 0.000 description 7
- 238000002834 transmittance Methods 0.000 description 4
- 210000002858 crystal cell Anatomy 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000004990 Smectic liquid crystal Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 101100112111 Caenorhabditis elegans cand-1 gene Proteins 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
-
- 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
-
- 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
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/54—Additives having no specific mesophase characterised by their chemical composition
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Liquid Crystal Substances (AREA)
Abstract
The invention discloses an automobile full-liquid-crystal instrument panel, which comprises an upper substrate, a lower substrate and a liquid crystal box clamped between the upper substrate and the lower substrate, wherein the liquid crystal box is filled with a VA-mode display material and consists of a main body mixture and an additive; the host mixture comprises a compound of formula I, a compound of formula II, a compound of formula III, and a compound of formula IV; the additive is selected from the group consisting of compounds of formula VIII. The instrument panel has better low-temperature stability; and meanwhile, the device has high reliability for ultraviolet illumination.
Description
Technical Field
The invention belongs to the technical field of intelligent instrument panels, and particularly relates to an automobile full-liquid crystal instrument panel with good low-temperature stability and high reliability.
Background
With the rapid development of economy and the improvement of the living standard of people, automobiles have become the main transportation means of ordinary families. As a device for reflecting the operation conditions of various systems of an automobile, an automobile instrument panel is one of the most commonly contacted automobile parts. Conventionally, the rotation speed, the water temperature, the oil quantity and the speed per hour are displayed by a mechanical instrument panel. The mechanical instrument panel has the characteristics of stable technology, maturity and reliability.
However, in recent years, due to the rapid development of automobile, communication and display technologies, more intuitive and modern display devices are required to meet the demands of instant messaging, navigation and entertainment of people, so that all-liquid-crystal dashboards are desired. The novel instrument panel is applied to automobiles to replace the traditional mechanical instrument panel by the characteristics of light weight, low power consumption and colored flowers, realizes a digital display function and is used for displaying the average oil consumption, the instantaneous oil consumption, the outdoor temperature, the average speed, the driving time, the driving mileage, the navigation and the multimedia entertainment of the automobiles. The full liquid crystal instrument panel is safer in driving; the display effect is better, and the sense of science and technology is stronger.
As a liquid crystal display device of an automobile instrument panel, display modes such as TN (twisted nematic), STN (super twisted nematic) and VA (vertical alignment) are more commonly used. The TN and STN display modes have short response times and wide operating temperatures, but the contrast and viewing angle are not ideal. VA display mode has the characteristics of a wide viewing angle and a high contrast ratio, but is easy to crystallize or to develop a smectic phase at a low temperature, while the low temperature response time is slightly long.
On the other hand, the VA display mode display material is required to meet certain reliability requirements, especially reliability against ultraviolet light, which is closely related to the service life of the automobile instrument panel.
Accordingly, there is a strong need to provide an automobile all-liquid-crystal instrument panel with good low-temperature stability and high reliability, aiming at the defects of the prior art.
Disclosure of Invention
The invention aims to provide an automobile all-liquid-crystal instrument panel with good low-temperature stability and high reliability. Compared with the prior art, the automobile full-liquid crystal instrument panel has better low-temperature stability; and meanwhile, the device has high reliability for ultraviolet illumination.
In order to solve the technical problems, the invention adopts the following technical scheme: an automobile full-liquid crystal instrument panel comprises an upper substrate, a lower substrate and a liquid crystal box clamped between the upper substrate and the lower substrate, wherein polyimide PI alignment layers are arranged on the inner surfaces of the upper substrate and the lower substrate, and the liquid crystal box is filled with a display material in a VA mode; wherein the display material consists of a main mixture and an additive; the host mixture comprises at least one compound of formula I, at least one compound of formula II, at least one compound of formula III, and at least one compound of formula IV,
wherein R is 1 And R is 2 Each independently represents an alkyl or alkoxy group of 1 to 8 carbon atoms, preferably 1 to 6 carbon atoms;
wherein R is 3 And R is 4 Each independently represents an alkyl or alkoxy group of 1 to 8 carbon atoms, preferably 1 to 6 carbon atoms;
wherein R is 5 Represents alkenyl of 2 to 8 carbon atoms, preferably 2 to 6 carbon atoms; r is R 6 Represents alkyl or alkoxy groups of 1 to 8 carbon atoms, preferably 1 to 6 carbon atoms;
wherein R is 7 And R is 8 Each independently represents an alkyl or alkoxy group of 1 to 8 carbon atoms, preferably 1 to 6 carbon atoms;
the additive is selected from the group consisting of compounds of formula IX,
wherein m is an integer of 6 to 10.
In the present invention, alkenyl groups are defined as one or more non-adjacent CH' s 2 Alkyl substituted with ch=ch.
The full liquid crystal instrument panel of the automobile, according to the invention, comprises 6-14%, preferably 8-12% of the compound of formula I; the content of the compound of formula II is 6-12%, preferably 8-10%; the content of the compound of formula III is 10-20%, preferably 12-18%; the content of the compound of formula IV is 4-8%, preferably 5-7%; based on the total weight of the host mixture.
The full liquid crystal instrument panel for automobiles according to the present invention, wherein it further comprises a compound of formula V,
wherein R is 9 Represents alkenyl of 2 to 8 carbon atoms, preferably 2 to 6 carbon atoms; r is R 10 Represents alkyl or alkoxy groups of 1 to 8 carbon atoms, preferably 1 to 6 carbon atoms; ring A represents
The full liquid crystal instrument panel of the automobile according to the invention, wherein the content of the compound of formula V is 4-12%, preferably 6-10%; based on the total weight of the host mixture.
The full liquid crystal instrument panel of the automobile according to the invention, wherein it further comprises a compound of formula VI,
wherein R is 11 Represents alkyl or alkoxy groups of 1 to 8 carbon atoms, preferably 1 to 6 carbon atoms; r is R 12 Represents alkenyl of 2 to 8 carbon atoms, preferably 2 to 6 carbon atoms.
The full liquid crystal instrument panel of the automobile according to the invention, wherein the content of the compound of formula VI is 22-34%, preferably 26-30%; based on the total weight of the host mixture.
The full liquid crystal instrument panel for automobiles according to the present invention, wherein it further comprises a compound of formula VII,
wherein R is 13 Represents alkenyl of 2 to 8 carbon atoms, preferably 2 to 6 carbon atoms; r is R 14 Represents alkyl or alkoxy groups of 1 to 8 carbon atoms, preferably 1 to 6 carbon atoms.
The full liquid crystal instrument panel of the automobile according to the invention, wherein the content of the compound of formula VII is 10-18%, preferably 12-15%; based on the total weight of the host mixture.
The full liquid crystal instrument panel for automobiles according to the present invention, wherein it further comprises a compound of formula VIII,
wherein R is 15 And R is 16 Each independently represents an alkyl or alkoxy group of 1 to 8 carbon atoms, preferably 1 to 6 carbon atoms.
The full liquid crystal instrument panel of the automobile according to the invention, wherein the content of the compound of formula VIII is 4-9%, preferably 5-8%; based on the total weight of the host mixture.
The automobile full liquid crystal instrument panel according to the invention, wherein the additive is added in an amount of 0.005-0.2%, preferably 0.01-0.1%; based on the total weight of the host mixture.
In a further preferred embodiment, the display material according to the invention advantageously consists of the compounds of the formulae I to IX described above.
The inventors have found that the combination of different monomers in specific proportions and in specific structures, in particular specific cyclic units and side groups, gives a host mixture which is then mixed with additives in the corresponding proportions to give a display material for an all-liquid-crystal dashboard of a motor vehicle, which fills the liquid-crystal cell of the all-liquid-crystal dashboard of a motor vehicle. Compared with the prior art, the liquid crystal box of the automobile full-liquid crystal instrument panel has better low-temperature stability; and meanwhile, the device has high reliability for ultraviolet illumination.
Detailed Description
The invention is further described below in conjunction with the detailed description.
It should be understood that the description of the specific embodiments is merely illustrative of the principles and spirit of the invention, and not in limitation thereof. Further, it should be understood that various changes, substitutions, omissions, modifications, or adaptations to the present invention may be made by those skilled in the art after having read the present disclosure, and such equivalent embodiments are within the scope of the present invention as defined in the appended claims.
In the present invention, all parts are parts by weight unless otherwise specified; all percentages are by weight; cp represents a clearing point in degrees Celsius.
Δn represents the optical anisotropy value at 25℃and 589 nm.
Delta epsilon represents the dielectric anisotropy values obtained for a 6 μm thick VA test cell at 25℃and 1 kHz.
γ1 represents the rotational viscosity (mPas) measured at 25 ℃.
In the present invention, each monomer compound is represented by a three-stage abbreviation of (cyclic unit+linker) +left side group+right side group. Wherein,,
linking and pendant groups:
n(O)-＝C n H 2n+1 (O)-；
-(O)n＝-(O)C n H 2n+1 ；
Vn-＝CH 2 ＝CHC n H 2n -；
-nV＝-C n H 2n CH＝CH 2 ；
-V＝-CH＝CH 2 ；
-V-＝-CH＝CH-；
-T-＝-C≡C-；
-1O-＝-CH 2 O-；
-Q-＝-CF 2 O-；
n＝C n H 2n+1 ；
n=natural number;
o represents an oxygen atom.
A ring unit:
(trans configuration).
EXAMPLE 1 host mixture
Δn＝0.097；Δε＝-4.2；Cp＝81.9；γ1＝84。
EXAMPLE 2 host mixture
EXAMPLE 3 host mixture
Further, in order to test the low temperature stability of example 1, a 6 μm thick VA test cell (having polyimide PI alignment layers on the inner surfaces of the upper and lower substrates) for an automobile all-liquid-crystal instrument panel was filled with the host mixture, and it was placed in a refrigerator at-20 ℃ to observe whether crystallization or smectic phase occurred in the VA test cell at regular intervals, and the duration of the low temperature stability, that is, the last time the phase stability was observed (LTS, h) was determined.
On the other hand, the response time (τ, ms) is the sum of the rise time and fall time of the VA test cell at-20deg.C and 6V drive voltage; the former is defined as the time for which the transmittance rises from 10% of the maximum transmittance until 90% is reached; the latter is the time when the transmittance decreases from 90% of the maximum transmittance until reaching 10%.
The results are shown in Table 1.
TABLE 1
| Test box | LTS，h | Response time (τ, ms) |
| Example 1 | >1300h | 12.83 |
As can be seen from Table 1, the host mixture of example 1 of the present invention has better low temperature stability. On the basis, the liquid crystal cell filled with the host mixture obtained by adding not more than 0.2% of the additive is not substantially changed in the aforementioned properties.
In yet another aspect, the host mixture of example 1 was mixed with the compound of additive formula IX (m=8) in an amount of 0.05%, to give the display material of example 1. Then, the display material was filled in the VA test cell described above.
Testing voltage holding ratio VHR at 25℃and 6V voltage, pulse width of 10ms and voltage holding time of 166.7ms ini (%) and the following. In addition, the display material of example 1 was irradiated with 5000mJ energy by an ultraviolet lamp having a wavelength of 365nm, and the voltage holding ratio VHR after ultraviolet irradiation was measured uv (％)。
VHR ini And VHR uv The smaller the difference between them, the higher the reliability of the cell filled with display material.
The results are shown in Table 2.
TABLE 2
| FillingLiquid crystal cell for display material | VHR ini (％) | VHR uv (％) |
| Example 1 | 99.89 | 99.85 |
As can be seen from Table 2, the reliability of the liquid crystal cell of example 1 of the present invention against ultraviolet irradiation is high.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (10)
1. The automobile full-liquid crystal instrument panel with good low-temperature stability and high reliability comprises an upper substrate, a lower substrate and a liquid crystal box clamped between the upper substrate and the lower substrate, wherein polyimide PI alignment layers are arranged on the inner surfaces of the upper substrate and the lower substrate, and the liquid crystal box is filled with a VA-mode display material; wherein the display material consists of a main mixture and an additive; the host mixture comprises at least one compound of formula I, at least one compound of formula II, at least one compound of formula III and at least one compound of formula IV, at least one compound of formula V, at least one compound of VI and/or formula VII, and at least one compound of VIII;
the content of the compound of the formula I is 6-14%; the content of the compound of the formula II is 6-12%; the content of the compound of the formula III is 10-20%; the content of the compound of the formula IV is 4-8%; the content of the compound of formula V is 4-12%; the content of the compound of formula VI is 22-34%; and/or the compound of formula VII is present in an amount of 10-18%; the content of the compound of formula VIII is 4-9%; the addition amount of the additive is 0.005-0.2%; based on the total weight of the host mixture;
wherein R is 1 And R is 2 Each independently represents an alkyl group of 1 to 8 carbon atoms or an alkoxy group;
wherein R is 3 And R is 4 Each independently represents an alkyl group of 1 to 8 carbon atoms or an alkoxy group;
wherein R is 5 Represents alkenyl of 2 to 8 carbon atoms; r is R 6 Represents alkyl or alkoxy of 1 to 8 carbon atoms;
wherein R is 7 And R is 8 Each independently represents an alkyl group of 1 to 8 carbon atoms or an alkoxy group;
wherein R is 9 Represents alkenyl of 2 to 8 carbon atoms; r is R 10 Represents alkyl or alkoxy of 1 to 8 carbon atoms; ring A represents
Wherein R is 11 Represents alkyl or alkoxy of 1 to 8 carbon atoms; r is R 12 Represents alkenyl of 2 to 8 carbon atoms;
wherein R is 13 Represents alkenyl of 2 to 8 carbon atoms; r is R 14 Represents alkyl or alkoxy of 1 to 8 carbon atoms;
wherein R is 15 And R is 16 Each independently represents an alkyl group of 1 to 8 carbon atoms or an alkoxy group;
the additive is selected from the group consisting of compounds of formula IX,
wherein m is an integer of 6 to 10.
2. The full liquid crystal instrument panel of an automobile with good low-temperature stability and high reliability according to claim 1, wherein the content of the compound of formula I is 8-12%; the content of the compound of the formula II is 8-10%; the content of the compound of the formula III is 12-18%; the content of the compound of the formula IV is 5-7%; based on the total weight of the host mixture.
3. The full liquid crystal instrument panel for automobiles having excellent low-temperature stability and high reliability according to claim 1, wherein,
R 1 and R is 2 Each independently represents 1 to 6Alkyl or alkoxy groups of carbon atoms; r is R 3 And R is 4 Each independently represents an alkyl group of 1 to 6 carbon atoms or an alkoxy group; r is R 5 Represents alkenyl of 2 to 6 carbon atoms; r is R 6 Represents an alkyl or alkoxy group of 1 to 6 carbon atoms; r is R 7 And R is 8 Each independently represents an alkyl group of 1 to 6 carbon atoms or an alkoxy group; r is R 9 Represents alkenyl of 2 to 6 carbon atoms; r is R 10 Represents alkyl or alkoxy of 1 to 6 carbon atoms.
4. The full liquid crystal instrument panel for automobiles having good low temperature stability and high reliability according to claim 1, wherein the compound of formula V is contained in an amount of 6 to 10%; based on the total weight of the host mixture.
5. The full liquid crystal instrument panel for automobile having excellent low temperature stability and high reliability according to claim 1, wherein R 11 Represents an alkyl or alkoxy group of 1 to 6 carbon atoms; r is R 12 Represents alkenyl of 2 to 6 carbon atoms; r is R 13 Represents alkenyl of 2 to 6 carbon atoms; r is R 14 Represents alkyl or alkoxy of 1 to 6 carbon atoms.
6. The full liquid crystal instrument panel of an automobile with good low temperature stability and high reliability according to claim 1, wherein the content of the compound of formula VI is 26-30%; and/or the compound of formula VII is present in an amount of 12-15%; based on the total weight of the host mixture.
7. The automobile full liquid crystal instrument panel according to claim 1 or 2, wherein R 15 And R is 16 Each independently represents an alkyl group or an alkoxy group of 1 to 6 carbon atoms.
8. The full liquid crystal instrument panel of an automobile with good low temperature stability and high reliability according to claim 1, wherein the compound of formula VIII has a content of 5-8%; based on the total weight of the host mixture.
9. The full liquid crystal instrument panel for automobiles with good low temperature stability and high reliability according to claim 1 or 2, wherein the additive is added in an amount of 0.01-0.1%; based on the total weight of the host mixture.
10. The full liquid crystal instrument panel for automobiles having good low temperature stability and high reliability according to any one of claims 1 to 9, wherein the display material is composed of the compounds of the above formulas I to IX.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110635710.1A CN113320386B (en) | 2021-06-08 | 2021-06-08 | Automobile full-liquid-crystal instrument panel with good low-temperature stability and high reliability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110635710.1A CN113320386B (en) | 2021-06-08 | 2021-06-08 | Automobile full-liquid-crystal instrument panel with good low-temperature stability and high reliability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113320386A CN113320386A (en) | 2021-08-31 |
| CN113320386B true CN113320386B (en) | 2023-08-04 |
Family
ID=77420002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110635710.1A Active CN113320386B (en) | 2021-06-08 | 2021-06-08 | Automobile full-liquid-crystal instrument panel with good low-temperature stability and high reliability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113320386B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000104072A (en) * | 1990-08-03 | 2000-04-11 | Merck Patent Gmbh | Liquid crystal medium |
| CN102344815A (en) * | 2011-07-12 | 2012-02-08 | 石家庄诚志永华显示材料有限公司 | Negative dielectric anisotrophy liquid crystal mixture |
| JP2014115192A (en) * | 2012-12-10 | 2014-06-26 | Yazaki Corp | Vehicle instrument device |
| CN111484857A (en) * | 2019-01-29 | 2020-08-04 | 石家庄诚志永华显示材料有限公司 | Liquid crystal composition, liquid crystal display element and liquid crystal display |
| CN111983851A (en) * | 2020-09-09 | 2020-11-24 | 深圳市猿人创新科技有限公司 | Automobile data recorder display device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113320385B (en) * | 2021-06-08 | 2023-07-14 | 浙江汽车仪表有限公司 | Automobile full-liquid-crystal instrument panel with short low-temperature response time and high reliability |
-
2021
- 2021-06-08 CN CN202110635710.1A patent/CN113320386B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000104072A (en) * | 1990-08-03 | 2000-04-11 | Merck Patent Gmbh | Liquid crystal medium |
| CN102344815A (en) * | 2011-07-12 | 2012-02-08 | 石家庄诚志永华显示材料有限公司 | Negative dielectric anisotrophy liquid crystal mixture |
| JP2014115192A (en) * | 2012-12-10 | 2014-06-26 | Yazaki Corp | Vehicle instrument device |
| CN111484857A (en) * | 2019-01-29 | 2020-08-04 | 石家庄诚志永华显示材料有限公司 | Liquid crystal composition, liquid crystal display element and liquid crystal display |
| CN111983851A (en) * | 2020-09-09 | 2020-11-24 | 深圳市猿人创新科技有限公司 | Automobile data recorder display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113320386A (en) | 2021-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101790751B1 (en) | Polymer stable alignment type liquid crystal composition and use thereof | |
| CN104342165B (en) | Liquid-crystal composition and application thereof | |
| CN104837957A (en) | Nematic liquid crystal composition and liquid crystal display element using same | |
| CN103361076A (en) | Liquid crystal composition with negative dielectric anisotropy and application thereof | |
| CN104428396A (en) | Nematic liquid crystal composition and liquid crystal display device using same | |
| CN105324461A (en) | Nematic liquid-crystal composition and liquid-crystal display element obtained using same | |
| CN113667490B (en) | Liquid crystal composition and liquid crystal display device | |
| CN102492430A (en) | Liquid crystal composition and liquid crystal display element containing the same | |
| CN104419427B (en) | Liquid-crystal composition and application thereof | |
| CN113667488A (en) | Liquid crystal composition and liquid crystal display device | |
| CN113320385B (en) | Automobile full-liquid-crystal instrument panel with short low-temperature response time and high reliability | |
| CN113105901B (en) | High-reliability display material for automobile full-liquid crystal instrument panel | |
| TW202016262A (en) | Liquid crystal composition and its display device capable of reducing basic voltage value, driving voltage and power consumption | |
| CN113320386B (en) | Automobile full-liquid-crystal instrument panel with good low-temperature stability and high reliability | |
| CN104371740B (en) | Liquid-crystal composition and its application | |
| CN113428005B (en) | Automobile full-liquid crystal instrument panel with high reliability | |
| CN113429980B (en) | Display material with good low-temperature stability | |
| CN113429981B (en) | Display material with short low-temperature response time | |
| CN113071311B (en) | High-reliability automobile full-liquid-crystal instrument panel | |
| CN113293009B (en) | Display material | |
| TW202016264A (en) | Liquid crystal composition and liquid crystal display device thereof having less light scattering and higher contrast | |
| CN113059997B (en) | Full liquid crystal panel board of car | |
| CN113088295B (en) | Display material for automobile full-liquid crystal instrument panel | |
| CN104449764B (en) | Liquid-crystal composition and its application with negative dielectric anisotropic | |
| CN113773856B (en) | Negative liquid crystal medium with low rotary viscosity and high elastic constant |
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 |