US 11,708,531 B2
Liquid crystal composition and display device having the same
Heung Shik Park, Seoul (KR); Kyeong Jong Kim, Suwon-si (KR); Ho Kil Oh, Seoul (KR); and Jae Soo Jang, Suwon-si (KR)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Jan. 18, 2021, as Appl. No. 17/151,257.
Claims priority of application No. 10-2020-0010266 (KR), filed on Jan. 29, 2020; and application No. 10-2020-0136756 (KR), filed on Oct. 21, 2020.
Prior Publication US 2021/0230482 A1, Jul. 29, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G02F 1/1333 (2006.01); C09K 19/44 (2006.01); C09K 19/12 (2006.01); C09K 19/30 (2006.01)
CPC C09K 19/44 (2013.01) [C09K 19/12 (2013.01); C09K 19/3003 (2013.01); C09K 2019/122 (2013.01); C09K 2019/301 (2013.01); C09K 2019/3004 (2013.01); C09K 2019/3016 (2013.01)] 20 Claims
 
1. A liquid crystal composition for a display device, the composition comprising:
about 20 to about 60 parts, by weight, of at least one compound represented by Chemical Formula 1;

OG Complex Work Unit Chemistry
about 5 to about 18 parts, by weight, of at least one compound represented by Chemical Formula 2;

OG Complex Work Unit Chemistry
about 5 to about 18 parts, by weight, of at least one compound represented by Chemical Formula 3;

OG Complex Work Unit Chemistry
about 5 to about 35 parts, by weight, of at least one compound represented by Chemical Formula 4;

OG Complex Work Unit Chemistry
about 1 to about 8 parts, by weight, of a compound represented by Chemical Formula 5;

OG Complex Work Unit Chemistry
about 1 to about 8 parts, by weight, of a compound represented by Chemical Formula 6;

OG Complex Work Unit Chemistry
and about 1 to about 15 parts, by weight, of a compound represented by Chemical Formula 7:

OG Complex Work Unit Chemistry
with respect to 100 parts by weight of the entire composition,
wherein R and R′ are each, independently from one another, an alkyl or alkenyl group having a total number of carbon atoms in the alkenyl group in a range of 2 to 7 for R and R′ in each individual compound in Chemical Formulas 1 to 7, and having a total number of carbon atoms in the alkyl group in a range of 1 to 7 for R and R′ in each individual compound in Chemical Formulas 1 to 7, and
X is S in Chemical Formula 7, and
wherein the liquid crystal composition has a refractive index anisotropy of about 0.097 to about 0.137, wherein the liquid crystal composition has a nematic phase-iosotropic transition temperature of 74 degrees C., and wherein the liquid crystal composition has a rotational viscosity of 75.