Time filter

Source Type

Patent
Jnc Corporation and Jnc Petrochemical Corporation | Date: 2016-06-29

To show a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature, a low minimum temperature, small viscosity, suitable optical anisotropy, large positive dielectric anisotropy or having a suitable balance regarding at least two of the characteristics, and an AM device including the liquid crystal composition. The liquid crystal composition contains a specific compound having high maximum temperature and small viscosity as a first component, and a specific compound having large positive dielectric anisotropy as a second component, and may contain a specific compound having high maximum temperature or small viscosity as a third component, a specific compound having positive dielectric anisotropy as a fourth component, or a specific compound having negative dielectric anisotropy as a fifth component.


Patent
Jnc Corporation and Jnc Petrochemical Corporation | Date: 2016-08-19

Provided is a liquid crystal compound satisfying at least one of physical properties such as high stability to heat and light, a high clearing point (or high maximum temperature), low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, a suitable elastic constant and good compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. A compound is represented by formula (1), for example: wherein, R^(1 )and R^(2 )are independently alkenyl having 2 to 10 carbons; ring A^(1), ring A^(2 )and ring A^(3 )are independently 1,4-phenylene or 1,4-phenylene in which at least one piece of hydrogen is replaced by fluorine or chlorine; Z^(1 )and Z^(2 )are independently alkylene having 1 to 4 carbons, and at least one of Z^(1 )and Z^(2 )may be a single bond; and a is 1 or 2.


Patent
Jnc Corporation and Jnc Petrochemical Corporation | Date: 2016-06-12

To show a liquid-crystal composition having at least one or a suitable balance regarding at least two of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature thereof, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat; and an AM device including the composition and having short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio or a long service life. The liquid-crystal composition has negative dielectric anisotropy and contains a specific compound having a high maximum temperature and small viscosity as a first component, and the composition may contain a specific compound having large negative dielectric anisotropy as a second component, a specific compound having a high maximum temperature or small viscosity as a third component, and a specific compound having a polymerizable group as an additive component.


Patent
Jnc Corporation and Jnc Petrochemical Corporation | Date: 2016-10-05

A compound, represented by formula (1): wherein, R^(1 )and R^(2 )are alkyl having 1 to 15 carbons or the like; ring A^(1 )is tetrahydropyran-2,5-diyl, and ring A^(2 )and ring A^(3 )are 2-fluoro-1,4-phenylene or 2-chloro-1,4-phenylene; Z^(1), Z^(2 )and Z^(3 )are a single bond or the like; and a and b are 0 or 1, and a sum of a and b is 1.


Patent
JNC Corporation and JNC Petrochemical Corporation | Date: 2017-05-03

The subject is to provide liquid crystal display device that has characteristics such as a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio, a long service life and a small flicker rate. The invention relates to a liquid crystal display device having an electrode group formed on one or both of a pair of substrates that are opposed to each other, and a plurality of active devices connected to the electrode group, and a liquid crystal alignment film formed on the opposing surfaces of the pair of substrates, and a liquid crystal composition sandwiched in between the pair of substrates, wherein the liquid crystal alignment film includes a polymer having a photodegradable group, and the liquid crystal composition includes at least one compound represented by formula (1) as a first component:^(1) and R^(2) are independently alkyl having 1 to 12 carbons or the like; ring A and ring C are independently 1,4-cyclohexylene or the like; ring B is 2,3-difluoro-1,4-phenylene or the like; Z^(1) and Z^(2) are independently a single bond or the like; a is 0, 1, 2 or 3; b is 0 or 1; and the sum of a and b is 3 or less.


Patent
JNC Corporation and JNC Petrochemical Corporation | Date: 2017-06-14

The subject is to provide liquid crystal display device that has characteristics such as a short response time, a large voltage holding ratio, a low threshold voltage, a large contrast ratio, a long service life and a small flicker rate. The invention relates to a liquid crystal display device having an electrode group formed on one or both of a pair of substrates that are opposed to each other, and a plurality of active devices connected to the electrode group, and a liquid crystal alignment film formed on the opposing surfaces of the pair of substrates, and a liquid crystal composition sandwiched in between the pair of substrates, wherein the liquid crystal alignment film includes a polymer derived from a polyamic acid having a photodegradable group, and the liquid crystal composition includes at least one compound represented by formula (1) as a first component:^(1) is alkyl having 1 to 12 carbons or the like; ring A is 1,4-cyclohexylene, 1,4-phenylene or the like; Z^(1) is a single bond or the like; X^(1) and X^(2) are hydrogen or fluorine; Y^(1) is fluorine or the like; and a is 1, 2, 3 or 4.


Patent
Jnc Corporation and Jnc Petrochemical Corporation | Date: 2016-11-30

Provided is a compound having an effect on preventing photolysis of a liquid crystal composition and having a high solubility in the liquid crystal composition, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. The compound is represented by formula (1), the liquid crystal composition contains the compound, and the liquid crystal display device uses the composition. In formula (1), R^(1), R^(2), R^(3 )and R^(4 )are independently hydrogen or alkyl having 1 to 4 carbons; R^(5 )is hydrogen, hydroxy, oxy radical, alkyl having 1 to 10 carbons or alkoxy having 1 to 10 carbons; ring A^(1 )is 1,4-cyclohexylene, 1,4-cyclohexenylene or the like; Z^(1 )and Z^(2 )are independently a single bond or alkylene having 1 to 10 carbons; and a is 0, 1, 2 or 3.


Patent
Jnc Corporation and Jnc Petrochemical Corporation | Date: 2016-12-19

An object is to provide a polymerizable liquid crystal compound, a polymerizable liquid crystal composition containing the compound and liquid crystal polymerization film-kind capable of controlling chromatic dispersion characteristics and having low positive chromatic dispersion characteristics. An aspect can be exemplified in which the polymerizable liquid crystal compound is represented by formula (1):


Patent
Jnc Corporation and Jnc Petrochemical Corporation | Date: 2016-12-05

The subject is to show a liquid crystal composition in which the homeotropic alignment of liquid crystal molecules can be achieved by the action of a polymer, and a liquid crystal display device including this composition. The means concerns a nematic liquid crystal composition that has positive dielectric anisotropy and that includes a specific liquid crystal compound having a large positive dielectric anisotropy as a first component and a polar compound having a polymerizable group as a first additive, and the composition may include a specific liquid crystal compound having a high maximum temperature or a small viscosity as a second component, a specific liquid crystal compound having a positive dielectric anisotropy as a third component, a specific liquid crystal compound having negative dielectric anisotropy as a fourth component, and a polymerizable compound as a second additive, and concerns a liquid crystal display device including the composition.


Patent
JNC Corporation and JNC Petrochemical Corporation | Date: 2017-07-05

An object of the invention is to provide a display means with which no unevenness is caused on a surface of a separator material in a microporous film roll for a battery separator. Microporous film roll (1) for the battery separator according to the invention has indicator part (18) different in optical characteristics therefrom in microporous film (3) for the battery separator. Moreover, a method for producing microporous film roll (1) for the battery separator according to the invention has features of providing indicator part (18) different in light shieldability or light reflectivity therefrom in microporous film (3) for the battery separator.

Loading JNC Petrochemical Corporation collaborators
Loading JNC Petrochemical Corporation collaborators