摘要:
A process of producing a cellulose acylate film is disclosed. The process comprises a forming step of forming a web of a fluid, comprising a cellulose acylate, aromatic group-containing oligomer and solvent, by casting the fluid onto a support, a stretching step of stretching the web, thereby to align molecules of the aromatic group-containing oligomer along the stretching direction, and a heat-treatment step of subjecting the stretched web to a heat treatment, thereby to at least increase the alignment degree of molecules of the aromatic group-containing oligomer.
摘要:
A retardation film comprising a transparent support, disposed on a surface thereof, an alignment layer and an optically anisotropic layer is disclosed. The transparent support and the optically anisotropic layer satisfy following relations: Re(DLC)
摘要:
A novel liquid crystal display is disclosed. The display comprises a pair of substrates disposed facing each other and at least one of which has an electrode, a liquid-crystal layer being sandwiched in between the pair of substrates and comprising liquid-crystal molecules aligned along with a first alignment axis and a second alignment axis respectively formed on facing surfaces of the first and second substrates, a pair of polarizing plates disposed sandwiching the liquid-crystal layer, and at least an optically anisotropic layer disposed between the liquid-crystal layer and either of the polarizing plates, and comprising at least one liquid crystal compound which is aligned along with a third alignment axis and is fixed in the alignment state. And their disposition satisfies at least one of Condition (1): the alignment axes of the substrates are not parallel to transmission axes of the polarizing plates; and Condition (2): the alignment axis of the substrate is not parallel to the alignment axis of the optically anisotropic layer.
摘要:
A novel optical compensation film is disclosed. The optical compensation film comprises a substrate, and, on the substrate, at least one optically anisotropic layer of a composition comprising a liquid crystalline compound, wherein a difference (H2−H1) between a haze (H2) of the whole of the optical compensation film and a haze (H1) of the substrate along is not more than 0.2%. A novel polarizing plate and liquid crystal display device comprising the optical compensation film are also disclosed.
摘要:
A novel optical compensatory sheet comprising an optically anisotropic layer comprising at least one liquid crystal compound, at least one cellulose ester, and at least one polymer A comprising at least one repeating unit derived from a monomer having a fluoro-aliphatic group, and at least one repeating unit having a group selected from the group consisting of carboxyl group (—COOH) or a salt thereof, a sulfo group (—SO3H) or a salt thereof and a phosphonoxy group {—OP(═O) (OH)2} or a salt thereof, is disclosed. A novel optical compensatory sheet comprising an optically anisotropic layer comprising at lest one liquid crystal compound at least one polymer C, having a weight average molecular weight of not less than 5000 and less than 20000, represented by a formula (1b), and at least one polymer D, having a weight average molecular weight of not less than 20000, represented by a formula (1b), is also disclosed. In the formula, “A” represents a repeating unit having a group capable of hydrogen bonding, “B” represents a repeating unit having a polymerizable group, and “C” represents a repeating unit derived from an ethylene-type unsaturated monomer. -(A)ai-(B)bj-(C)ck- Formula (1b)
摘要翻译:一种新型光学补偿片,其包括光学各向异性层,其包含至少一种液晶化合物,至少一种纤维素酯和至少一种包含至少一种衍生自具有氟 - 脂族基团的单体的重复单元的聚合物A,并且至少 一个具有选自羧基(-COOH)或其盐,磺基(-SO 3 H 3))或其盐和膦氧基(-OP)的基团的重复单元 (-O)(OH)2 N 2)或其盐。 一种新型光学补偿片,其包含光学各向异性层,其至少包含一种液晶化合物,至少一种聚合物C,其重均分子量不小于5000且小于20000,由式(1b)表示,并且至少 还公开了由式(1b)表示的重均分子量不小于20000的一种聚合物D。 式中,“A”表示具有氢键的基团的重复单元,“B”表示具有聚合性基团的重复单元,“C”表示来自乙烯系不饱和单体的重复单元。 - (A)ai-(B)bj-(C)ck-公式(1b)<?in-line-formula description =“内联公式”end =“tail”?>
摘要:
A novel liquid crystal display is disclosed. The display comprises a pair of substrates disposed facing each other and at least one of which has an electrode, a liquid-crystal layer being sandwiched in between the pair of substrates and comprising liquid-crystal molecules aligned along with a first alignment axis and a second alignment axis respectively formed on facing surfaces of the first and second substrates, a pair of polarizing plates disposed sandwiching the liquid-crystal layer, and at least an optically anisotropic layer disposed between the liquid-crystal layer and either of the polarizing plates, and comprising at least one liquid crystal compound which is aligned along with a third alignment axis and is fixed in the alignment state. And their disposition satisfies at least one of Condition (1): the alignment axes of the substrates are not parallel to transmission axes of the polarizing plates; and Condition (2): the alignment axis of the substrate is not parallel to the alignment axis of the optically anisotropic layer.
摘要:
A 4-membered compound is represented by the following formula (I) is disclosed (in the formula, X1 and X2 each independently represent an oxygen atom, a sulfur atom or a substituted or unsubstituted imino group, Y1 and Y2 each independently represent a single bond, an oxygen atom or a substituted or unsubstituted imino group, B1 and B2 each independently represent an optionally substituted aliphatic, aliphatic carbonyl, aromatic or aromatic carbonyl group having 1-20 carbon atoms, and A1 and A2 each independently represent a group represented by the following formula (II) (Ar1, Ar2 and Ar3 each independently represent a cyclic group having 5-14 carbon atoms, L1 and L2 each independently represent a single bond or a divalent linking group, and p represents an integer of 0-2)). There is also disclosed a birefringence medium containing a 4-membered compound represented by the formula (I) and an optical element comprising the birefringence medium.
摘要:
A novel optical compensatory sheet comprising an optically anisotropic layer comprising at least one liquid crystal compound, at least one cellulose ester, and at least one polymer A comprising at least one repeating unit derived from a monomer having a fluoro-aliphatic group, and at least one repeating unit having a group selected from the group consisting of carboxyl group (—COOH) or a salt thereof, a sulfo group (—SO3H) or a salt thereof and a phosphonoxy group {—OP(═O) (OH)2} or a salt thereof, is disclosed. A novel optical compensatory sheet comprising an optically anisotropic layer comprising at lest one liquid crystal compound at least one polymer C, having a weight average molecular weight of not less than 5000 and less than 20000, represented by a formula (1b), and at least one polymer D, having a weight average molecular weight of not less than 20000, represented by a formula (1b), is also disclosed. In the formula, “A” represents a repeating unit having a group capable of hydrogen bonding, “B” represents a repeating unit having a polymerizable group, and “C” represents a repeating unit derived from an ethylene-type unsaturated monomer. -(A)ai-(B)bj-(C)ck- Formula (1b)
摘要:
An optical compensation sheet is provided and includes: a transparent substrate; and at least one optical anisotropic layer containing a liquid crystalline compound. The optical compensation sheet has a film contrast value of 4000 or more in which the film contrast value is represented by formula (1). film contrast value=(maximum luminance of the optical compensation sheet disposed between polarizing plates arranged in a parallel Nichol configuration)/(minimum luminance of the optical compensation sheet disposed between the polarizing plates arranged in a cross Nichol configuration) Formula (1)
摘要:
To provide a liquid crystal display, particularly TN type liquid crystal display capable of remarkably improving brightness inversion resistance at a high contrast with a simple configuration and an optical compensation film which realizes the aforementioned properties, the liquid crystal display includes a pair of polarizing plates, each of the polarizing plates being disposed on an outer side of a liquid crystal layer having a twisted structure, the liquid crystal layer being disposed between substrates facing to each other, at least one of the substrates having an electrode, each of the polarizing plates including a polarizing film, a protective film, and an optical compensation film, wherein the optical compensation film includes a compound having a discotic structure unit, and the compound having a discotic structure unit is aligned such that the average alignment direction of the molecular major axis of the discotic structure unit at each side of the upper and lower optical compensation films facing to the polarizing film cross each other at an angle of not greater than the crossing angle of absorption axes of the pair of polarizing plates.