Samsung Display Co., Ltd.

Dongjin Semichem Co., Ltd.

Bong Hee Kim

Keun Chan Oh

Si Heun Kim

Sun Hee Lee

Hye Lim Jang

Beom-Soo Shin

Beom Soo Shin

Young Ho Seo

Sun-Hee Lee

Young Kuk Kim

Mi Kyoung Lee

Bo Ra Hong

The present invention provides a liquid crystal composition having easily adjustable rotational viscosity while maintaining stability at low temperature, a clearing point and dielectric anisotropy (positive value) in an optimal condition according to an exemplary embodiment of the present invention, including: at least one liquid crystal compound selected from the group consisting of liquid crystal compounds represented by the following Chemical Formula 1, as a first component; at least one liquid crystal compound selected from the group consisting of liquid crystal compounds represented by the following Chemical Formula 2, as a second component; and at least one liquid crystal compound selected from the group consisting of liquid crystal compounds represented by the following Chemical Formula 3, as a third component. The liquid crystal composition according to the present invention has high clearing point and refractive index anisotropy, a controllable modulus of elasticity, and high specific resistance, and the rotational viscosity thereof is easily adjustable to be low. Thus, the liquid crystal composition satisfying various liquid crystal display (LCD) device characteristics is provided.

Liquid crystal composition having easily adjustable rotational viscosity

An exemplary embodiment of the present invention provides a compound represented by Chemical Formula 1: wherein, in Chemical Formula 1, n is 0, 1, or 2, and a substituent represented by X is F, Cl, CF, CFCFCHF, CHF, OCF, CN, NCS, or a C1 to C5 alkyl including 1 to 3 fluoro substituents and a CHgroup independently substituted with one or more oxygen atoms; (R) is hydrogen or a C1 to C15 alkyl, at least one CHgroup being independently replaced with &#x2014;C&#x2261;C&#x2014;, &#x2014;CFO&#x2014;, &#x2014;CH&#x2550;CH&#x2014;, &#x2014;O&#x2014;, &#x2014;CO&#x2014;O&#x2014;, &#x2014;O&#x2014;CO&#x2014;, or &#x2014;O&#x2014;CO&#x2014;O&#x2014; in a way that oxygen atoms are directly connected to each other, and 1 to 3 hydrogen atoms of the C1 to C15 alkyl being replaced with halogen; (F) indicates that a fluoro is optionally substituted in place of a hydrogen, andeach of is independently 

Compound, liquid crystal composition including the same, and liquid crystal display device including the same

A liquid crystal display device comprises a first substrate, a second substrate which faces the first substrate, an electrode part which is provided on at least one of the first substrate and the second substrate, and a liquid crystal layer which comprises a liquid crystal composition and is provided between the first substrate and the second substrate. The liquid crystal composition includes a liquid crystal compound of Formula 1. wherein R, R, A, A, A, A, A, Z, Z, Z, Z, Z, a, b, c, d, and e are as described herein.

Liquid crystal display device and liquid crystal composition used therefor

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Suwon-si, South Korea

Bong Hee Kim