CN113059997B - Full liquid crystal panel board of car - Google Patents
Full liquid crystal panel board of car Download PDFInfo
- Publication number
- CN113059997B CN113059997B CN202110370771.XA CN202110370771A CN113059997B CN 113059997 B CN113059997 B CN 113059997B CN 202110370771 A CN202110370771 A CN 202110370771A CN 113059997 B CN113059997 B CN 113059997B
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- carbon atoms
- formula
- compound
- instrument panel
- 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 51
- 150000001875 compounds Chemical class 0.000 claims abstract description 39
- 239000012769 display material Substances 0.000 claims abstract description 24
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 239000004642 Polyimide Substances 0.000 claims abstract description 4
- 229920001721 polyimide Polymers 0.000 claims abstract description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 44
- 125000003545 alkoxy group Chemical group 0.000 claims description 21
- 125000000217 alkyl group Chemical group 0.000 claims description 21
- 125000003342 alkenyl group Chemical group 0.000 claims description 13
- 238000012360 testing method Methods 0.000 description 6
- 210000004027 cell Anatomy 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 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
- 210000002858 crystal cell Anatomy 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000012217 deletion Methods 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
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 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 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 230000000007 visual effect Effects 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
-
- 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
- B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
- B60K2360/20—Optical features of instruments
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Liquid Crystal Substances (AREA)
Abstract
The 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, the liquid crystal box is filled with a VA mode display material, and the display material comprises at least one compound shown in a formula I, at least one compound shown in a formula II and at least one compound shown in a formula III. Compared with the prior art, the liquid crystal box of the automobile full liquid crystal instrument panel has better low-temperature stability and shorter low-temperature response time.
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.
Background
With the rapid development of economy and the improvement of the living standard of people, automobiles become main vehicles of ordinary families. As a device for reflecting the operation status of each system of an automobile, an automobile dashboard is one of the most contacted automobile parts in daily life. Traditionally, the rotation speed, water temperature, oil quantity and 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 more modern display devices are required to meet the demand of people for instant messaging, navigation and entertainment, and thus, full liquid crystal dashboards are called for. The novel instrument panel is applied to the automobile by the characteristics of unique lightness, low power consumption and colored flowers to replace the traditional mechanical instrument panel, realizes the 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 automobile. The full liquid crystal instrument panel is safer during driving; the display effect is better, and the science and technology sense is stronger.
As a liquid crystal display device for an automobile instrument panel, display modes such as TN (twisted nematic), STN (super twisted nematic), and VA (vertical alignment) are commonly used. The response time of TN and STN display modes is short, the working temperature is wide, but the contrast and the visual angle are not ideal. The VA display mode has features of a wide viewing angle and a high contrast, but is easily crystallized or a smectic phase occurs at a low temperature while the response time at a low temperature is slightly long.
Therefore, in view of the above-mentioned drawbacks of the prior art, there is a strong need to provide an all-liquid-crystal dashboard for automobiles, which has better low-temperature stability and shorter low-temperature response time.
Disclosure of Invention
The invention aims to provide an automobile full-liquid crystal instrument panel. Compared with the prior art, the automobile full-liquid crystal instrument panel has better low-temperature stability and shorter low-temperature response time.
In order to solve the technical problems, the invention adopts the following technical scheme: a full liquid crystal instrument panel for an automobile 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 a VA-mode display material is filled in the liquid crystal box; characterized in that the display material comprises at least one compound of formula I, at least one compound of formula II and at least one compound of formula III,
wherein R1-R2 each independently represent an alkyl or alkoxy group of 1-8 carbon atoms, preferably 1-6 carbon atoms;
wherein R3 represents an alkenyl group of 2 to 8 carbon atoms, preferably 2 to 6 carbon atoms; r4 represents an alkyl or alkoxy group of 1 to 8 carbon atoms, preferably 1 to 6 carbon atoms;
wherein R5 to R6 each independently represent an alkyl or alkoxy group of 1 to 8 carbon atoms, preferably 1 to 6 carbon atoms.
In the present invention, alkenyl is defined as one or more non-adjacent CH2Alkyl substituted with CH ═ CH.
The automobile full liquid crystal instrument panel is characterized in that the content of the compound shown in the formula I is 10-20%, preferably 12-18%; the content of the compound of the formula II is 15-28%, preferably 18-24%; the content of the compound of the formula III is 4-12%, preferably 6-10%; based on the total weight of the display material.
The automobile all-liquid crystal instrument panel further comprises a compound shown in a formula VII,
wherein R13 to R14 each independently represent an alkyl or alkoxy group of 1 to 8 carbon atoms, preferably 1 to 6 carbon atoms.
The automobile full liquid crystal instrument panel is characterized in that the content of the compound shown in the formula VII is 4-12%, preferably 6-10%; based on the total weight of the display material.
The automobile all-liquid crystal instrument panel further comprises a compound shown in a formula IV,
wherein R7 represents an alkenyl group of 2 to 8 carbon atoms, preferably 2 to 6 carbon atoms; r8 represents an alkyl or alkoxy group of 1 to 8 carbon atoms, preferably 1 to 6 carbon atoms; ring A represents
The automobile full liquid crystal instrument panel is characterized in that the content of the compound shown in the formula IV is 4-8%, preferably 5-7%; based on the total weight of the display material.
The automobile all-liquid crystal instrument panel further comprises a compound shown in the formula V,
wherein R9 represents an alkyl or alkoxy group of 1 to 8 carbon atoms, preferably 1 to 6 carbon atoms; r10 represents an alkenyl group of 2 to 8 carbon atoms, preferably 2 to 6 carbon atoms.
The automobile full liquid crystal instrument panel is characterized in that the content of the compound shown in the formula V is 20-35%, preferably 25-30%; based on the total weight of the display material.
The automobile all-liquid crystal instrument panel further comprises a compound shown in a formula VI,
wherein R11 represents an alkenyl group of 2 to 8 carbon atoms, preferably 2 to 6 carbon atoms; r12 represents an alkyl or alkoxy group of 1 to 8 carbon atoms, preferably 1 to 6 carbon atoms.
The automobile full liquid crystal instrument panel is characterized in that the content of the compound shown in the formula VI is 8-18%, preferably 10-15%; based on the total weight of the display material.
In a further preferred embodiment, the display material according to the invention advantageously consists of the compounds of the formulae I to VII described above.
The inventors have found that the combination of different monomers using specific proportions and specific structures, in particular specific cyclic units and side groups, gives a VA-mode display material which fills the liquid crystal cells of an automotive all-liquid-crystal dashboard. Compared with the prior art, the liquid crystal box of the automobile full liquid crystal instrument panel has better low-temperature stability and shorter low-temperature response time.
Detailed Description
The invention will be further illustrated with reference to specific embodiments.
It should be understood that the detailed description of the invention is merely illustrative of the spirit and principles of the invention and is not intended to limit the scope of the invention. Furthermore, it should be understood that various changes, substitutions, deletions, modifications or adjustments may be made by those skilled in the art after reading the disclosure of the present invention, and such equivalents are also within the scope of the 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 denotes clearing point in deg.C.
Δ n represents the optical anisotropy value at 25 ℃ and 589 nm.
Δ ε represents the value of the dielectric anisotropy obtained with a 6 μm thick VA test cell at 25 ℃ and 1 kHz.
γ 1 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,
linker and pendant group:
n(O)-＝CnH2n+1(O)-；
-(O)n＝-(O)CnH2n+1；
Vn-＝CH2＝CHCnH2n-；
-nV＝-CnH2nCH＝CH2；
-V＝-CH＝CH2；
-T-＝-C≡C-；
-1O-＝-CH2O-
n＝CnH2n+1；
n is a natural number;
o represents an oxygen atom.
Cyclic unit:
Example 1
Δn＝0.102；Δε＝-4.6；Cp＝84.6；γ1＝87。
Comparative example 1
Δn＝0.107；Δε＝-3.9；Cp＝78.4；γ1＝104。
Further, in order to test the low temperature stability of example 1 and comparative example 1, the display materials of both were filled in a VA test cell (upper and lower substrate inner surfaces having polyimide PI alignment layers) of 6 μm thickness for an all liquid crystal instrument panel of an automobile, which was placed in a refrigerator at-20 ℃, and whether or not a crystalline or smectic phase occurred in the VA test cell was observed at regular intervals, to determine the duration of the low temperature stability, i.e., the holding time (LTS, h) at which the phase stabilization was recently observed.
On the other hand, the response time (τ, ms) is the sum of the rise time and the fall time of the VA test cell at-20 ℃ and a drive voltage of 6V; 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 for the transmittance to drop from 90% of the maximum transmittance until 10% is reached.
See table 1 for results.
TABLE 1
| Test box | LTS，h | Response time (τ, ms) |
| Example 1 | >1100h | 14.42 |
| Comparative example 1 | 825-850h | 23.15 |
As can be seen from table 1, compared to comparative example 1, the liquid crystal cell of the all liquid crystal instrument panel for the automobile described in example 1 of the present invention has not only better low temperature stability, but also shorter low temperature response time.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (16)
1. A full liquid crystal instrument panel for an automobile 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 a VA-mode display material is filled in the liquid crystal box; characterized in that the display material consists of at least one compound of the formula I, at least one compound of the formula II, at least one compound of the formula III, a compound of the formula IV, a compound of the formula V, a compound of the formula VI and a compound of the formula VII,
wherein R1 to R2 each independently represent an alkyl or alkoxy group of 1 to 8 carbon atoms;
wherein R3 represents an alkenyl group of 2 to 8 carbon atoms; r4 represents an alkyl or alkoxy group of 1 to 8 carbon atoms;
wherein R5 to R6 each independently represent an alkyl or alkoxy group of 1 to 8 carbon atoms;
wherein R7 represents an alkenyl group of 2 to 8 carbon atoms; r8 represents an alkyl or alkoxy group of 1 to 8 carbon atoms; ring A represents
Or
；
Wherein R9 represents an alkyl or alkoxy group of 1 to 8 carbon atoms; r10 represents an alkenyl group of 2 to 8 carbon atoms;
wherein R11 represents an alkenyl group of 2 to 8 carbon atoms; r12 represents an alkyl or alkoxy group of 1 to 8 carbon atoms;
wherein R13 to R14 each independently represent an alkyl group or an alkoxy group of 1 to 8 carbon atoms.
2. The automotive all-liquid crystal instrument panel according to claim 1, wherein R1-R2 each independently represent an alkyl group or an alkoxy group of 1-6 carbon atoms; r3 represents an alkenyl group of 2 to 6 carbon atoms; r4 represents an alkyl or alkoxy group of 1 to 6 carbon atoms; r5 to R6 each independently represent an alkyl or alkoxy group of 1 to 6 carbon atoms.
3. The automobile full liquid crystal instrument panel according to claim 1, wherein the content of the compound of the formula I is 10-20%; the content of the compound of the formula II is 15-28%; the content of the compound of the formula III is 4-12%; based on the total weight of the display material.
4. The automobile full liquid crystal instrument panel according to claim 3, wherein the content of the compound of the formula I is 12-18%; the content of the compound of the formula II is 18-24%; the content of the compound of the formula III is 6-10%; based on the total weight of the display material.
5. The liquid crystal instrument panel for automobiles according to claim 1, wherein R13-R14 each independently represent an alkyl group or an alkoxy group of 1-6 carbon atoms.
6. The automotive all-liquid crystal instrument panel according to claim 1, wherein the content of the compound of the formula VII is 4-12%; based on the total weight of the display material.
7. The automobile all-liquid-crystal instrument panel according to claim 6, wherein the content of the compound of the formula VII is 6-10%; based on the total weight of the display material.
8. The automotive all-liquid crystal instrument panel according to claim 1, wherein R7 represents an alkenyl group having 2 to 6 carbon atoms; r8 represents an alkyl or alkoxy group of 1 to 6 carbon atoms.
9. The automotive all-liquid crystal instrument panel according to claim 1, wherein the content of the compound of formula IV is 4-8%; based on the total weight of the display material.
10. The automotive all-liquid crystal instrument panel according to claim 9, wherein the content of the compound of formula IV is 5-7%; based on the total weight of the display material.
11. The automotive all-liquid crystal instrument panel according to claim 1, wherein R9 represents an alkyl group or an alkoxy group having 1 to 6 carbon atoms; r10 represents an alkenyl group of 2 to 6 carbon atoms.
12. The automotive all-liquid crystal instrument panel according to claim 1, wherein the content of the compound of formula V is 20-35%; based on the total weight of the display material.
13. The automotive all-liquid crystal instrument panel according to claim 12, wherein the content of the compound of formula V is 25-30%; based on the total weight of the display material.
14. The automotive all-liquid crystal instrument panel according to claim 1, wherein R11 represents an alkenyl group having 2 to 6 carbon atoms; r12 represents an alkyl or alkoxy group of 1 to 6 carbon atoms.
15. The automotive all-liquid crystal instrument panel according to claim 1, wherein the content of the compound of formula VI is 8-18%; based on the total weight of the display material.
16. The automotive all-liquid crystal instrument panel according to claim 15, wherein the content of the compound of formula VI is 10-15%; based on the total weight of the display material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110370771.XA CN113059997B (en) | 2021-04-07 | 2021-04-07 | Full liquid crystal panel board of car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110370771.XA CN113059997B (en) | 2021-04-07 | 2021-04-07 | Full liquid crystal panel board of car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113059997A CN113059997A (en) | 2021-07-02 |
| CN113059997B true CN113059997B (en) | 2022-02-18 |
Family
ID=76565837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110370771.XA Active CN113059997B (en) | 2021-04-07 | 2021-04-07 | Full liquid crystal panel board of car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113059997B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1407060A (en) * | 2001-08-30 | 2003-04-02 | 默克专利股份有限公司 | Liquid crystal composition |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102517038B (en) * | 2011-12-02 | 2016-08-17 | 江苏和成显示科技股份有限公司 | Liquid-crystal composition and include the liquid crystal display device of this liquid-crystal composition |
| WO2013094596A1 (en) * | 2011-12-21 | 2013-06-27 | Dic株式会社 | Nematic liquid crystal composition and liquid crystal display element using same |
| JP5333693B1 (en) * | 2012-03-30 | 2013-11-06 | Ｄｉｃ株式会社 | Liquid crystal display element and manufacturing method thereof |
| CN105652499B (en) * | 2016-03-23 | 2019-01-04 | 石家庄诚志永华显示材料有限公司 | Liquid-crystal composition and liquid crystal display element or display |
| CN109957405A (en) * | 2017-12-26 | 2019-07-02 | 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 |
| CN112526788B (en) * | 2019-09-17 | 2022-10-28 | 江苏和成显示科技有限公司 | Liquid crystal display device having a plurality of pixel electrodes |
| CN111983851B (en) * | 2020-09-09 | 2021-07-06 | 深圳市猿人创新科技有限公司 | Automobile data recorder display device |
-
2021
- 2021-04-07 CN CN202110370771.XA patent/CN113059997B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1407060A (en) * | 2001-08-30 | 2003-04-02 | 默克专利股份有限公司 | Liquid crystal composition |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113059997A (en) | 2021-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103254906B (en) | Liquid crystal composition containing difluoro methoxyl ether compounds | |
| CN108728117B (en) | Liquid crystal composition and display device thereof | |
| TW202028430A (en) | Liquid crystal composition, liquid crystal display element and liquid crystal display | |
| CN104342165A (en) | Liquid crystal composition and application thereof | |
| CN103361076A (en) | Liquid crystal composition with negative dielectric anisotropy and application thereof | |
| CN102492430A (en) | Liquid crystal composition and liquid crystal display element containing the same | |
| TWI759641B (en) | Liquid crystal composition and display device thereof | |
| CN113105901B (en) | High-reliability display material for automobile full-liquid crystal instrument panel | |
| CN113059997B (en) | Full liquid crystal panel board of car | |
| TWI711691B (en) | Liquid crystal composition and its display device | |
| CN113088295B (en) | Display material for automobile full-liquid crystal instrument panel | |
| CN113320385B (en) | Automobile full-liquid-crystal instrument panel with short low-temperature response time and high reliability | |
| CN113071311B (en) | High-reliability automobile full-liquid-crystal instrument panel | |
| CN113429980B (en) | Display material with good low-temperature stability | |
| CN113652245B (en) | Wide-temperature negative nematic liquid crystal composition and application thereof | |
| CN113773856B (en) | Negative liquid crystal medium with low rotary viscosity and high elastic constant | |
| CN113320386B (en) | Automobile full-liquid-crystal instrument panel with good low-temperature stability and high reliability | |
| CN113293009B (en) | Display material | |
| CN113429981B (en) | Display material with short low-temperature response time | |
| TWI762826B (en) | Liquid crystal composition and display device thereof | |
| CN104449764B (en) | Liquid-crystal composition and its application with negative dielectric anisotropic | |
| CN113428005B (en) | Automobile full-liquid crystal instrument panel with high reliability | |
| CN113789182B (en) | PSVA display device and vehicle-mounted application thereof | |
| CN111117655B (en) | Liquid crystal composition and display device thereof | |
| CN112538357A (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 | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A full LCD instrument panel for automobiles Effective date of registration: 20230410 Granted publication date: 20220218 Pledgee: Shaoxing Branch of Bank of Hangzhou Co.,Ltd. Pledgor: ZHEJIANG AUTOMOBILE INSTRUMENT Co.,Ltd. Registration number: Y2023980037619 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |