Dic Corporation

Dainippon Ink and Chemicals, Incorporated

Yasuo Umezu

Kiyofumi Takeuchi

Shinji Ogawa

Haruyoshi Takatsu

Shinichi Hirata

Yoshio Aoki

Hidehiko Yamaguchi

Yoshinori Iwashita

Shotaro Kawakami

Tetsuo Kusumoto

Go Sudo

Kazunori Maruyama

Masanao Hayashi

Haruki Ohishi

Hidenari Akiyama

Sunao Yoshihara

Takayuki Miki

Mika Takasaki

Aya Ishizuka

Tomoaki Hara

Hyobok Cha

Tsuyoshi Sasaki

Noriyuki Sugiyama

Takeshi Isonaka

Hirotomo Sasaki

Takeo Kizaki

Naomi Hatano

It is an object of the present invention to provide a compound that can provide a liquid crystal composition with a high T, a high Δn, a low V, a high Δε, a low tan δ, and high storage stability at low temperatures, a liquid crystal composition, as well as a liquid crystal display element, a sensor, a liquid crystal lens, optical communication equipment, and an antenna each using this. Specifically disclosed are a compound represented by the general formula (i) having an ethynylene group (—C≡C—) and an isothiocyanate group (—NCS) and a liquid crystal composition containing one or two or more of the compounds.

Compound, liquid crystal composition, as well as liquid crystal display element, sensor, liquid crystal lens, optical communication equipment, and antenna each using the same

It is an object of the present invention to provide an image display apparatus capable of inhibiting or preventing the deterioration of a light conversion layer while high luminous efficiency and high color reproducibility are achieved. The present invention provides a light-emitting device including a pair of electrodes, an electroluminescent layer disposed between a first electrode and a second electrode, a light conversion layer including multiple pixels and converting light that is emitted from the electroluminescent layer and that has a blue emission spectrum into light having a different wavelength. The light conversion layer includes pixels of three primary colors of red (R), green (G), and blue (B) and contains a light-emitting nanocrystal having an emission spectrum in any of red (R), green (G), and blue (B) when light from the electroluminescent layer is incident on at least one of the three primary colors.

Light-emitting device and image display apparatus including the same

A dispersion contains, as essential ingredients, light-emitting nanocrystals, a polymeric dispersant having an amine value of 5 mg/KOH g or more, and a stimulation-responsive curable material that cures in response to an external stimulus.

Dispersion and inkjet ink composition, light conversion layer, and liquid crystal display element using the dispersion

The liquid crystal display element uses a liquid crystal composition which has a negative value of dielectric anisotropy (&#x394;&#x3b5;) and is designed to improve light transmittance adjusting an elastic constant, and a liquid crystal display including the liquid crystal display element. The liquid crystal display element uses a liquid crystal composition having a dielectric anisotropy (&#x394;&#x3b5;) of less than &#x2212;1.5, in which a value of &#x393; of the liquid crystal composition is 0.3 or less, and the value of &#x393; is obtained from Equation (2) using measured values of a splay elastic constant (K) and a bend elastic constant (K) of the liquid crystal composition and a twist elastic constant (K) value obtained from Equation (1) using measured values of a threshold voltage (Vth), a bend elastic constant (K), vacuum permittivity (&#x3b5;), a cell gap (d), and a helical pitch (P). 

Liquid crystal display element and liquid crystal display

The present invention relates to a liquid crystal composition, which is a liquid crystal composition containing a compound represented by General Formula (II-1) as an anti-oxidizing agent for a liquid crystal composition containing the compound represented by General Formula (II-1) and also as a first component, and a compound represented by General Formula (K) as a second component. The compound represented by General Formula (II-1) enables obtainment of a working effect of the anti-oxidizing agent, and therefore it allows provision of a liquid crystal composition containing the anti-oxidizing agent which has improved reliability like low temperature stability, while the high dielectric anisotropy is maintained.

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

There is provided a liquid crystal composition having the following properties without reductions in refractive index anisotropy (&#x394;n) and nematic phase-isotropic liquid phase transition temperature (T): sufficiently small viscosity (&#x3b7;), sufficiently small rotational viscosity (&#x3b3;1), a large elastic constant (K), and negative dielectric anisotropy (&#x394;&#x3b5;) with a large absolute value. There is also provided a liquid crystal display device of, for example, a VA type in which such a liquid crystal composition is used and which has a high response speed and excellent display quality with defective display being eliminated or reduced. The liquid crystal display device using the liquid crystal composition of the present invention is useful as an active-matrix liquid crystal display device and can be used in liquid crystal display devices of, for instance, a VA mode and PSVA mode.

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

The present invention provides a nematic liquid crystal composition using a 4,6-difluoroindane-based compound that has a low lower limit temperature (T) of the liquid crystal phase, high upper limit temperature (T) of the liquid crystal phase, and wide liquid crystal phase temperature range without impairing response speed, threshold voltage and other liquid crystal characteristics within a the range of the optimal &#x394;n as a nematic liquid crystal, and a 4,6-difluoroindane-based compound that is used in said liquid crystal composition. The nematic liquid crystal composition contains at least one type of compound having a 4,6-difluoroindan-2,5-diyl group, and the refractive index anisotropy is within the range of 0.08 to 0.15, the liquid crystal phase upper limit temperature is 70&#xb0; C. or higher, the liquid crystal phase lower limit temperature is &#x2212;20&#xb0; C. or lower, and the difference between the liquid crystal phase upper limit temperature and liquid crystal phase lower limit temperature is 90&#xb0; C. or more.

Nematic liquid crystal composition containing indane compound

A liquid crystal device comprising a pair of substrates each having an electrode layer at least one of which is transparent, one or both of said substrates having formed thereon a network layer having a three-dimensional network structure which comprises a transparent solid substance, or one of said substrates having formed thereon said network layer with the other substrate having formed thereon an alignment layer, said pair of substrates being assembled in such a manner that said network layer of one substrate faces to the other network layer or the other substrate with or without an alignment layer in contact or with a small gap therebetween, and a liquid crystal material filled between said pair of substrates.

Liquid crystal device employing polymer network on one substrate and

A light scattering liquid crystal device having a double structure composed of (1) a first display panel of light scattering type which comprises a pair of transparent substrates each having a transparent electrode layer and a light controlling layer formed therebetween, said light controlling layer containing a liquid crystal material and a transparent solid substance and (2) a second display panel comprising a pair of transparent substrates each having an electrode layer and a liquid crystal material filled therebetween, selected from a guest-host type liquid crystal display panel containing a dichroic dye and a twisted or super-twisted nematic liquid crystal display panel having a pair of polarizers. The device achieves brightness and high contrast.

Double-layer liquid crystal device having a three dimensional network

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Kita-adachi-gun, Japan

Yasuo Umezu