Dic Corporation

Dic Corporation (tokyo)

Marina Goto

Go Sudo

Haruyoshi Takatsu

Kazunori Maruyama

Masanao Hayashi

Toru Fujisawa

Fumiaki Kodera

Yuichi Inoue

Manabu Takachi

Keumhee Jang

Shota Kosaka

Shuuhei Yamamoto

[Object] An object of the present invention is to provide a liquid crystal composition containing a polymerizable compound for use in the manufacture of a PSA or PSVA liquid crystal display device. The polymerizable compound has a sufficiently high polymerization rate. The PSA or PSVA liquid crystal display device has few or no display defects due to a change in pretilt angle, has an adequate pretilt angle, and has high responsiveness. The present invention also provides a liquid crystal display device having the liquid crystal composition. [Solution] The object is achieved by using a liquid crystal composition containing one or two or more polymerizable compounds represented by the general formula (I).

Liquid crystal composition and liquid crystal display element

The present invention relates to a nematic liquid crystal composition containing a polymerizable compound and having a negative dielectric anisotropy (&#x394;&#x3b5;) and PSA or PSVA liquid crystal display element produced by using the same. The liquid crystal composition according to the present invention can provide PSA or PSVA liquid crystal display element, in which a sufficient pretilt angle is included, the amount of remaining monomer is small, there are no or almost no problems, e.g., alignment defects and display defects, arisen from a low voltage holding rate (VHR) and the like, and excellent response performance is exhibited. A liquid crystal display element using the liquid crystal composition according to the present invention is useful for an active-matrix-drive liquid crystal display element and can be applied to PSA, PSVA, and other liquid crystal display elements.

Nematic liquid crystal composition and liquid crystal display element using same

There is provided a liquid crystal composition that exhibits a sufficiently low viscosity (&#x3b7;), a sufficiently low rotational viscosity (&#x3b3;1), and a large elastic modulus (K) without decreasing the refractive index anisotropy (&#x394;n) and the nematic phase-isotropic liquid phase transition temperature (T) and without increasing the solid phase-nematic phase transition temperature (T). The liquid crystal display element that uses this liquid crystal composition satisfactorily obtains a pretilt angle and has a high voltage holding ratio (VHR) and high-speed response. Thus, a liquid crystal display element that has no or less alignment defects and display defects such as image sticking, and has high display quality and high response speed is obtained.

Nematic liquid crystal composition and liquid crystal display element using the same

Provided is an LCD device having excellent high speed responsiveness. This LCD device contains a polymer or a copolymer in a liquid crystal composition sandwiched between two transparent substrates, at least one of which has an electrode, and the content of the polymer or the copolymer is 1% by mass or greater and less than 40% by mass of the total mass of the liquid crystal composition and the polymer or the copolymer. This LCD device can be applied to various operation modes such as TN, STN, ECB, VA, VA-TN, IPS, FFS, a &#x3c0; cell, OCB, and cholesteric liquid crystals.

LCD device

Growing community of inventors

Kita-adachi-gun, Japan

Marina Goto