摘要:
A liquid crystal display device having improved and broadened viewing angle characteristics. The device includes a liquid crystal cell of the twisted nematic type for driving sandwiched by a pair of upper and lower polarizing plates in which at least one compensating film is inserted between the liquid crystal cell and the upper polarizing plate or between the liquid crystal cell and the lower polarizing plate. Alternatively, two compensating films are respectively inserted between the liquid crystal cell and the upper polarizing plate and between the liquid crystal cell and the lower polarizing plate. The compensating film consists essentially of a liquid crystalline polymer showing optically a positive uniaxiality, the liquid crystalline polymer being fixed in a nematic hybrid orientational order. The device is further characterized by an angle between a tilt direction of the compensating film and a pretilt direction on a liquid crystal cell substrate opposed to a substrate for the liquid crystal cell for driving closest to the compensating film in the range of 165.degree. and 195.degree. C.
摘要翻译:一种液晶显示装置,其具有改进的和加宽的视角特性。 该装置包括扭转向列型的液晶单元,用于驱动夹在一对上下偏振板之间,其中至少一个补偿膜插入在液晶单元和上偏振板之间或液晶单元与 下偏振片。 或者,两个补偿膜分别插入在液晶单元和上偏振板之间以及液晶单元和下偏振板之间。 补偿膜基本上由液晶聚合物基本上由光学上显示正单轴性组成,液晶聚合物以向列混合取向顺序固定。 该装置的特征还在于,补偿膜的倾斜方向与液晶单元基板的与用于最靠近补偿膜驱动的液晶单元的基板相对的165°和195°范围内的倾斜方向之间的角度 DEG C.
摘要:
A high-quality optical compensator for use in liquid crystal display elements can be prepared from a film comprising an end unit modified liquid crystalline polymer which has a monofunctional structural unit and which exhibits an optically positive uniaxiality, and, as needed, a liquid crystalline polymer which has a logarithmic viscosity at least 0.01 dl/g higher than that of the end unit modified liquid crystalline polymer and a glass transition point at least 5° C. higher than that of the end unit modified liquid crystalline polymer and which exhibits an optically positive uniaxiality, wherein a nematic hybrid orientation which is formed in the liquid crystal state is immobilized.
摘要:
A method of manufacturing a catalyst by suspending a titanium-containing silicate porous material in a solution with a metal salt being dissolved therein, and then by exposing the solution to ultra violet light to precipitate metal fine particles on the surface of the porous material.
摘要:
A tungsten-containing mesoporous silica thin film, which is a mesoporous silica thin film formed from a solution containing a silica precursor and a water-soluble tungsten compound, and has a molar ratio (W/Si) of tungsten content to silicon content of 0.001 to 0.04, a film thickness of 0.1 to 5 μm, and an average pore diameter of 20 nm or less.
摘要:
A method for producing a norbornene derivative wherein, in the presence of palladium and at least one selected from phosphorus compounds represented by the following General Formulae (1) and (2): [in Formula (1), R1, R2, R3 and R4 each independently represent a hydrogen atom or the like, and R5 and R6 each independently represent a branched chain saturated hydrocarbon group having 3 to 10 carbon atoms or the like], and [in Formula (2), R7 represents a branched chain saturated hydrocarbon group having 3 to 10 carbon atoms], a norbornadiene derivative represented by the following General Formula (3): [in Formula (3), R8, R9, R10, R11 and R12 each independently represent a hydrogen atom or the like, l represents an integer of 0 or 1, m represents an integer of 0 or 1, and n represents an integer of 0 or 1], and a bromine compound represented by the following General Formula (4): [Chemical Formula 4] Br—Z—R13 (4) [in Formula (4), Z represents a phenylene group or the like, and R13 represents a hydrogen atom or the like] are reacted with each other, to thereby obtain a norbornene derivative represented by the following General Formula (5): [in Formula (5), R14, R15, R16, R17 and R18 each independently represent a hydrogen atom or the like, Z represents a phenylene group or the like, R19 represents a hydrogen atom or the like, l represents an integer of 0 or 1, m represents an integer of 0 or 1, and n represents an integer of 0 or 1], the norbornene derivative having a configuration of a substituent represented by Z in General Formula (5) that is an exo configuration.
摘要:
A reverse dispersion retardation film is formed by stretching a film containing a norbornene-based ring-opening copolymer containing a structural unit (A) represented by a general formula (1) and a structural unit (B) represented by a general formula (2), wherein a total amount of the structural unit (A) and an exo-form structural unit, among the structural units (B), is not less than 20 mol % but not more than 65 mol % of all the structural units.
摘要:
A reverse dispersion retardation film, formed by stretching a film comprising a norbornene-based ring-opening copolymer containing a structural unit (A) represented by the following general formula (1): [in the formula (1), m represents an integer of any one of 0 and 1, R1 represents a hydrogen atom or the like, X1 represents a group represented by a formula: —CH2CH2— or the like, a and b each independently represent an integer of 0 to 6, Y represents a methylene group or the like, and represents a methylene group or the like] and a structural unit (B) represented by the following general formula (2): [in the formula (2), n represents an integer of any one of 0 and 1, X2 represents a group represented by a formula: —CH2CH2— or the like, R2, R3, R4, and R5 each represent a hydrogen atom or the like, wavy lines d and e each represent a configuration of any one of an endo and an exo, and a wavy line f represents a configuration of any one of an endo and an exo], wherein a total amount of the structural unit (A) and an exo-form structural unit, in which the wavy line f represents the exo configuration, among the structural units (B) is not less than 20 mol % but not more than 65 mol % of all the structural units.
摘要:
A method of manufacturing a catalyst by suspending a titanium-containing silicate porous material in a solution with a metal salt being dissolved therein, and then by exposing the solution to ultra violet light to precipitate metal fine particles on the surface of the porous material.
摘要:
A main chain type liquid crystalline polyester comprises at least two units selected from aromatic diol units, aromtic dicarboxylic acid units, and aromatic hydroxycarboxylic acid units as essential units and a structural unit containing a cationically polymerizable group selected from the group consisting of vinyloxy groups, epoxy groups, and oxetany groups in at least one of the terminal ends of the main chain.
摘要:
A novel optical film capable of readily vitrifying the tendency and state of liquid crystal alignment, excellent in the ability to retain the alignment state, and suitable for the application to optical elements. The film is produced from a liquid-crystal material containing as the essential ingredient a liquid-crystal polyester having structural units (A) and (B) as the essential unit, exhibiting a vitrified state at a temperature lower than the liquid-crystal transition point, and having a logarithmic viscosity number (&eegr;) of 0.04-0.4 dl/g as measured at 30° C. in a phenol/tetrachloroethane solvent (60/40 by weight), wherein each X represents independently O or C═O; each Y represents independently a group selected from among F, Cl, Br and 1-4C alkyls; and n is 0 or 1.