Liquid crystal composition and photoelectric display device thereof
View Patent ↗A liquid crystal composition includes one or more compounds of general Formula I in an amount of 1%-30% by weight of the total weight of the liquid crystal composition, one or more compounds of general Formula II in an amount of 5%-35% by weight of the total weight of the liquid crystal composition, and one or more compounds of general Formula III in an amount of 1%-35% by weight of the total weight of the liquid crystal composition. The liquid crystal composition has an appropriate clearing point, an appropriate optical anisotropy, an appropriate dielectric anisotropy, as well as a higher voltage holding ratio, a higher transmittance, a good high-temperature resistant performance and a faster response speed, thus being suitable for display modes, such as VA, IPS and FFS. A photoelectric display device includes the liquid crystal composition.
1. A liquid crystal composition comprising:
one or more compounds of general Formula I in an amount of 10%-25% by weight of the total weight of the liquid crystal composition
one or more compounds of general Formula II in an amount of 5%-35% by weight of the total weight of the liquid crystal composition
and
one or more compounds selected from the group consisting of general Formulas III-3, III-6 to III-10, and III-12 to III-15 in an amount of 1%-35% by weight of the total weight of the liquid crystal composition
wherein, R 1 , R 3 and R 5 each independently represents C 1-7 alkyl or alkoxy; R 2 and R 4 each independently represents C 1-7 alkyl or alkoxy, or C 2-7 alkenyl or alkenoxy; wherein one or more —H in R 1 , R 2 , R 3 , R 4 and R 5 can each be independently substituted by halogen, and one or more —CH 2 — in R 1 , R 2 , R 3 , R 4 and R 5 can each be independently substituted by cyclopentyl, cyclopropyl or cyclobutyl;
L 1 , L 2 , L 3 , and L 4 each independently represents —F, —Cl, —CF 3 , —OCF 3 or —CH 2 F.
2. The liquid crystal composition according to claim 1 , wherein the compound of general Formula I is selected from a group consisting of the following compounds:
and
the compound of general Formula II is selected from a group consisting of the following compounds:
wherein, R 2 represents C 1-7 alkyl or alkoxy, or C 2-7 alkenyl, R 3 ′ represents C 1-7 alkyl, and m represents 0, 1 or 2.
3. The liquid crystal composition according to claim 1 , wherein the one or more compounds of general Formula I provides 10%-25% by weight of the total weight of the liquid crystal composition, the one or more compounds of general Formula II provides 8%-30% by weight of the total weight of the liquid crystal composition, and the one or more compounds of general Formula III provides 5%-30% by weight of the total weight of the liquid crystal composition.
4. The liquid crystal composition according to claim 1 , further comprising:
one or more compounds of general Formula IV in an amount of 10%-70% by weight of the total weight of the liquid crystal composition
wherein, R 6 and R 7 each independently represents C 1-7 alkyl or alkoxy, or C 2-7 alkenyl;
Z 3 represents single bond, —CH 2 CH 2 —, —CH═CH— or —CH 2 O—; and
ring A3 represents 1,4-cyclohexylene, 1,4-cyclohexenylene or 1,4-phenylene.
5. The liquid crystal composition according to claim 4 , wherein the one or more compounds of general Formula IV provides 20%-60% by weight of the total weight of the liquid crystal composition.
6. The liquid crystal composition according to claim 5 , wherein the compound of general Formula IV is selected from a group consisting of the following compounds:
7. The liquid crystal composition according to claim 1 , further comprising:
one or more compounds of general Formula V in an amount of 1%-20% by weight of the total weight of the liquid crystal composition
wherein, R 8 and R 9 each independently represents C 1-7 alkyl or alkoxy, or C 2-7 alkenyl.
8. The liquid crystal composition according to claim 7 , wherein at least one of R 8 and R 9 represents C 2-7 alkenyl.
9. The liquid crystal composition according to claim 8 , wherein the compound of general Formula V provides 1-15% by weight of the total weight of the liquid crystal composition.
10. A photoelectric display device comprising the liquid crystal composition according to claim 1 .
11. The liquid crystal composition according to claim 1 , further comprising:
one or more compounds from a group consisting of the following compounds:
wherein: R 4 represents C 1-7 alkyl or alkoxy, or C 2-7 alkenyl or alkenoxy; R 5 represents C 1-7 alkyl or alkoxy; and
wherein one or more —H in R 4 and R 5 can each be independently substituted by halogen, and one or more —CH 2 — in R 4 and R 5 can each be independently substituted by cyclopentyl, cyclopropyl or cyclobutyl.