Dic Corporation

Dainippon Ink and Chemicals, Incorporated

Nemoptic

Samsung Electronics Co., Ltd.

Hidetoshi Nakata

Hiroshi Hasebe

Kunihiko Kotani

Yasuhiro Kuwana

Kiyofumi Takeuchi

Mika Yamamoto

Koichi Endou

Haruyoshi Takatsu

Yoshiyuki Ono

Kazunori Maruyama

Kazuaki Hatsusaka

Ivan N Dozov

Yoshio Aoki

Daniel Stoenescu

Akihiro Koiso

Jean-Claude Dubois

Takeshi Kuriyama

Makoto Sasaki

Isa Nishiyama

Toru Fujisawa

Shinichi Hirata

Seung Hyun Lee

Hyun-seok Choi

Tsuyoshi Ohyama

Masanao Takashima

Toru Ishii

Keumhee Jang

Ivan Dozov

The present invention relates to a liquid crystal composition for a light-scattering liquid crystal device shown in FIG.containing a polymerizable compound selected from the group consisting of compounds represented by the following general formula (1) as a first component and containing a compound having a negative dielectric anisotropy as a second component, a light-scattering liquid crystal device using the liquid crystal composition, and a smart window using the light-scattering liquid crystal device. A reverse mode type light-scattering liquid crystal device can have excellent transparency when no voltage is applied and a reduced driving voltage by the liquid crystal composition of the present invention.

Liquid crystal composition for light-scattering liquid crystal device, light-scattering liquid crystal device, and smart window

A foldable circular polarizing plate includes a polarizer and a foldable compensation film disposed on one surface of the polarizer, wherein in-plane retardations of the liquid crystal layer at 450 nm, 550 nm, and 650 nm wavelengths satisfy Relationship Equations 1 or 2, the compensation film is configured to absorb light in a wavelength region of less than or equal to 420 nm, and a reflection color in a CIE-Lab color coordinate system satisfies &#x394;a*b*&#x2264;5.0 and a foldable organic light emitting diode display including the same.(450 nm)&#x3c;(550 nm)&#x2264;(650 nm)&#x2003;&#x2003;[Relationship Equation 1](450 nm)&#x2264;(550 nm)&#x3c;(650 nm)&#x2003;&#x2003;[Relationship Equation 2]

Foldable circular polarizing plate and display device

The present invention relates to light-scattering liquid crystal devices suited for use in light control glass such as optical shutters and use in segment displays in, for example, clocks. A light-scattering liquid crystal device according to the present invention includes two substrates, of which at least one includes an electrode layerand at least one is transparent, and a light control layerheld between the substrates, the light control layercontaining a liquid crystal material and a polymer substance, wherein the light-scattering liquid crystal device includes, between the substrates and the light control layer, a thin film layerformed by subjecting a thermally curable compound containing a reactive group to thermal curing. According to the present invention, a light-scattering liquid crystal device having dramatically improved adhesion can be provided.

Light-scattering liquid crystal device

There is provided a compound containing a mesogenic group, which includes a silicon compound at a low concentration, a polymerizable compound containing the mesogenic group, a mixture and a composition using these compounds, a polymerizable mixture having the polymerizable compound, and a polymer, an optically anisotropic body, and a phase difference film using the polymerizable composition. It is possible to obtain the optically anisotropic body and the phase difference film having satisfactory scratch resistance and adhesion, by using the polymerizable composition composed of the compound containing a mesogenic group, which includes a silicon compound at a low concentration.

Compound containing mesogenic group, and mixture, composition, and optically anisotropic body using said compound

An object of the invention is to provide polymerizable compounds having excellent optical characteristics and suited as materials for optically anisotropic articles, compositions containing the polymerizable compounds, polymers obtained by polymerizing the polymerizable compounds, optically anisotropic articles formed of the polymers, and liquid crystal display devices including the optically anisotropic articles.

Polymerizable compounds, compositions, polymers, optically anisotropic articles, liquid crystal display devices and organic EL devices

The present invention provides a method for producing a polymerizable liquid crystal composition which produces films being uncolored and having no cissing and good alignment when applied to a substrate, and also provides a polymerizable liquid crystal composition produced by the method and an optically anisotropic body using the polymerizable liquid crystal composition. Specifically, the present invention provides a method for producing a polymerizable liquid crystal composition, the method comprising a step (I) of preparing a polymerizable solution by mixing at least one polymerizable compound having at least one polymerizable functional group and one or two or more organic solvents and heating and stirring the resultant mixture; and a step (II) of mixing the polymerizable solution with a polymerization initiator, and also provides a polymerizable liquid crystal composition produced by the method and an optically anisotropic body using the polymerizable liquid crystal composition.

Production method for polymerizable liquid crystal composition

An object of the present invention is to provide a polymerizable liquid crystal composition with which two characteristics of smoothness of a surface of an anisotropic optical body and orientation properties of liquid crystals can be simultaneously improved, when preparing an anisotropic optical body to be obtained by photopolymerization of the polymerizable liquid crystal composition. Specifically, an object of the present invention is to provide a polymerizable liquid crystal composition containing specific polymerizable compounds and a fluorine-based surfactant. In addition, an anisotropic optical body, a retardation film, an antireflective film, and a liquid crystal display element prepared using the polymerizable liquid crystal composition of the present invention are also provided.

Polymerizable liquid crystal composition, and anisotropic optical body, retardation film, antireflective film, and liquid crystal, display element fabricated using composition

It is an object of the present invention to provide a polymerizable compound suitable as a material for optically anisotropic bodies having excellent optical properties, a composition containing the polymerizable compound, a polymer obtained by polymerizing the polymerizable compound, an optically anisotropic body formed of the polymer, and a liquid crystal display device including the optically anisotropic body.

Polymerizable compound, composition, polymer, optically anisotropic body, liquid crystal display device, and organic EL device

A polymerizable composition solution that has good storage stability and allows a polymerizable compound in the polymerizable composition to be aligned well with no defects after application to a base and removal of a solvent by a drying process and also an optically anisotropic body that includes the solution and has good alignment without any defects. A solution containing a polymerizable composition and an organic solvent, wherein the polymerizable composition contains 90 mass % or more of a polymerizable compound intramolecularly having a 2-methyl-1,4-phenylene group as represented by general formula (1) and an optically anisotropic body including the solution.

Polymerizable composition solution and optically anisotropic body including the same

The present invention relates to a polymerizable composition useful as a liquid crystal device, a display, an optical member, a coloring agent, a security marking, and a laser light emitting member and a thin film obtained from the polymerizable composition. The present invention provides a polymerizable liquid crystal composition having excellent solubility into a solvent, exhibiting good adhesion to a base material, and being capable of realizing a thin film having low haze and no variations and, in addition, provides a thin film having excellent appearance by using the polymerizable liquid crystal composition. The polymerizable liquid crystal composition according to the present invention is used and, thereby, a composition and a thin film having low haze and no variations and, at the same time, having excellent adhesion to a base material can be obtained at a low cost.

Polymerizable liquid crystal composition and thin film using same

The present invention provides a nematic liquid crystal composition suitable for a bistable nematic liquid crystal display. A bistable nematic liquid crystal display having a wide nematic phase temperature range and operating temperature range can be obtained by using a nematic liquid crystal composition comprising at least 20% by weight of a specific liquid crystal compound (A) having a polar group and 5 to 50% by weight of a specific liquid crystal compound (B) not having a polar group, along with comprising, in the compound (B), at least 3% by weight of a specific liquid crystal compound having a alkenyl group.

Nematic liquid crystal composition and bistable nematic liqud crystal display

A nematic liquid crystal composition of the present invention includes at least 20% by weight of one, or two or more compounds selected from compound group A; and 5 to 50% by weight of one, or two or more compounds selected from compound group B, wherein the relative proportions of the above-mentioned compounds used in the nematic liquid crystal composition is determined to simultaneously obtain the specific physical characteristics for the composition, and an anchoring breaking voltage Uis less than or equal to 25 V when the product (&#x394;n&#xb7;d) of the refractive index anisotropy (&#x394;n) at 20&#xb0; C. and the thickness (d) is 140 nm and the liquid crystal composition is confined between two substrates for a bistable nematic liquid crystal display in which at least one of the substrates have a weak zenithal anchoring force.

Nematic liquid crystal composition and bistable nematic liquid crystal display

A chiral nematic liquid crystal composition has minimal temperature dependency of the natural pitch and temperature dependency of the wavelength selective reflection and low temperature storage stability thereof is excellent. A chiral nematic liquid crystal composition with a broad liquid crystal temperature range is used in a bistable liquid crystal display element, and a bistable liquid crystal display element comprising the liquid crystal composition. The chiral nematic liquid crystal composition comprises optically active compounds represented by general formula (I-a) and general formula (II-a): RP-LP-L-P&#x2014;R&#x2003;&#x2003;(II-a) wherein the general formula (II-a) has the same helical twisting direction as the general formula (I-a), and shows a positive temperature dependency for the natural pitch, and a HTP value of at least 3. A bistable liquid crystal display element comprises the liquid crystal composition.

Liquid crystal composition and liquid crystal display element

A method of increasing helical twisting power (HTP) in an optically active compound used in a liquid crystal material is provided. An optically active compound which exhibits a large HTP value is also provided. Furthermore, a liquid crystal composition which exhibits a high upper temperature limit of the liquid crystal after the addition of the optically active compound, and a liquid crystal display device using the same are provided. In a method, an HTP of a compound having a partial structure represented by formula (A), which has an asymmetric carbon atom, is increased by replacing the partial structure represented by formula (A) by a partial structure represented by formula (B) (wherein * represents the position of an asymmetric carbon atom, Yrepresents a substituent such as an alkyl group and a halogen). A compound is represented by formula (I): 

Method of increasing helical twisting power, optically active compound, liquid crystal compostion containing the same, and liquid crystal display device

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Kita-adachi-gun, Japan

Hidetoshi Nakata