摘要:
The invention relates to a liquid crystal display device comprising a retardation layer wherein an in-plane slow axis of the retardation layer is within the direction of 90±40 degrees relative to to an absorption axis of the polarizing layer disposed at a closer position to the retardation layer; Re(550) meets following relation, 25 nm≦Re(550)≦230 nm; R[40°] of the retardation layer which is measured for incident light in a direction tilted by 40 degrees toward the tilt direction of the retardation layer relative to the normal line of the retardation layer meets following relation, 0 nm≦R[40°]≦300 nm; and R[+40°] of the retardation layer and retardation R[−40°] of the retardation layer meet following relation, 1
摘要:
A polarizing plate has a polarizer and a protective film formed on at least one surface of the polarizer. The protective film is formed by curing an energy ray-curable composition that contains at least one of a first energy ray-polymerizing compound having a bisphenol residue, a second energy ray-polymerizing compound having a neopentylglycol group, a third energy ray-polymerizing compound having a trimethylolpropane group, and a fourth energy ray-polymerizing compound having a pentaerythritol group. In the polarizing plate, though the protective film is thin, the polarizer is protected from the influence of external moisture, etc., and therefore its polarizability is kept good even in high-temperature high-humidity environments.
摘要:
A cellulose acylate film in which the number of V-shaped thickness-uneven portions having a variation width in the thickness direction of 0.1 to 10% of a film thickness and a width in the in-plane direction of 1 to 20 mm is in the range of 0 to 10 per 100 m in the length direction of the film. A display unevenness is solved in a liquid crystal display device having the cellulose acylate film.
摘要:
Provided is a method for producing a polyester film, including: subjecting a polyester raw material resin, which contains a titanium compound and has an intrinsic viscosity of from 0.71 to 1.00, to melt extrusion using a twin-screw extruder which includes a cylinder; two screws disposed inside the cylinder; and a kneading disk unit disposed in at least a portion of a region extending from a 10%-position to a 65%-position of screw length with respect to an upstream end of the screws in a resin extrusion direction as a starting point, at a maximum shear rate generated inside the twin-screw extruder of from 10 sec−1 to 2000 sec−1; forming an unstretched film by cooling and solidifying the melt extruded polyester resin on a cast roll; subjecting the unstretched film to biaxial stretching in a longitudinal direction and a lateral direction; and heat fixing the stretched film formed by biaxial stretching.
摘要:
A cellulose acylate resin film which can suppress generation of color nonuniformity even after exposure to high temperature and high humidity when incorporated in a liquid crystal display element can be produced. The cellulose acylate resin film is heat-treated at a temperature of Tg−30° C. to Tg+20° C., Tg representing the glass transition temperature of the cellulose acylate resin, for 10 seconds to 600 seconds while conveying the cellulose acylate resin film at a tension of 2 N/cm2 to 120 N/cm2.
摘要翻译:可以制造即使在掺入到液晶显示元件中时也可以在暴露于高温高湿度之后抑制颜色不均匀的产生的纤维素酰化物树脂膜。 将纤维素酰化物树脂膜在Tg-30℃至Tg + 20℃的温度下热处理,Tg代表纤维素酰化物树脂的玻璃化转变温度,持续10秒至600秒,同时输送纤维素酰化物 树脂膜以2N / cm 2至120N / cm 2的张力。
摘要:
A polarizing plate has a polarizer and a protective film formed on at least one surface of the polarizer. The protective film is formed by curing an energy ray-curable composition that contains at least one of a first energy ray-polymerizing compound having a bisphenol residue, a second energy ray-polymerizing compound having a neopentylglycol group, a third energy ray-polymerizing compound having a trimethylolpropane group, and a fourth energy ray-polymerizing compound having a pentaerythritol group. In the polarizing plate, though the protective film is thin, the polarizer is protected from the influence of external moisture, etc., and therefore its polarizability is kept good even in high-temperature high-humidity environments.
摘要:
A polarizing plate is provided in which adhesion properties between a polarizer and a protection film are improved and in which the optical properties of the polarizer are stable under the influence of moisture and the like. Specifically, in polarizing plates 4 and 12, protection films 3 and 11 are formed on at least one side of polarizers 2 and 10, respectively, by curing an energy ray-curable composition. The energy ray-curable composition contains (1) an energy ray-polymerizable compound having a bridged hydrocarbon group, a bisphenol group, a neopentyl glycol group, a trimethylolpropane group, or a pentaerythritol group and (2) a hydrolysate of a silane-based coupling agent. At least one of the polarizing plates 4 and 12 is provided on at least one side of a liquid crystal panel 1, whereby a liquid crystal device 9 is constituted.
摘要:
A cellulose acylate resin film which can suppress generation of color nonuniformity even after exposure to high temperature and high humidity when incorporated in a liquid crystal display element can be produced. The cellulose acylate resin film is heat-treated at a temperature of Tg−30° C. to Tg+20° C., Tg representing the glass transition temperature of the cellulose acylate resin, for 10 seconds to 600 seconds while conveying the cellulose acylate resin film at a tension of 2 N/cm2 to 120 N/cm2.
摘要翻译:可以制造即使在掺入到液晶显示元件中时也可以在暴露于高温高湿度之后抑制颜色不均匀的产生的纤维素酰化物树脂膜。 将纤维素酰化物树脂膜在Tg-30℃至Tg + 20℃的温度下热处理,Tg代表纤维素酰化物树脂的玻璃化转变温度,持续10秒至600秒,同时输送纤维素酰化物 树脂膜以2N / cm 2至120N / cm 2的张力。
摘要:
A method for producing a thermoplastic film, comprising cooling and solidifying a filmy thermoplastic melt resin, by holding it between a metallic presser and a metallic casting roll for cooling; wherein the temperature of the filmy thermoplastic resin just before being held between the metallic presser and the casting roll for cooling is from Tg+20° C. to Tg+90° C. and a difference between a surface temperature (Tt) of the metallic presser and a surface temperature (T1) of the casting roll for cooling satisfies the formula (1) and a contact length Q satisfies the following formula (2) 0.5° C.≦T1−Tt≦20° C. (1) 0.1 cm≦Q≦8 cm (2) The method provides a thermoplastic film having high thickness accuracy and surface smoothness.
摘要:
A simple technique for introducing a hybrid alignment or a homeotropic (vertical) alignment into liquid crystal films, which, by their nature, tend to have a horizontal alignment of liquid crystal molecules. The technique does not require special alignment films. A liquid crystal composition for forming a liquid crystal film contains a polymerizable liquid crystal compound and a hydrolysate of an alkoxysilane compound. The hydrolysate of the alkoxysilane compound contains a siloxane oligomer of which degree of polymerization is from 2 to 25. Furthermore, the alkoxysilane compound is a trialkoxysilane compound having a functional group. This liquid crystal film composition can be produced by hydrolyzing an alkoxysilane compound to obtain a hydrolysate and then uniformly mixing the hydrolysate with a polymerizable liquid crystal compound. Alternatively, it can be obtained by uniformly mixing the alkoxysilane compound with the polymerizable liquid crystal compound and subsequently hydrolyzing the alkoxysilane compound in the mixture. One mole of the alkoxysilane compound is preferably hydrolyzed with 0.1d to 2.0d mol of water, given that the number of alkoxyl groups in a molecule of the alkoxysilane compound is d. An optically anisotropic film can be obtained by applying the liquid crystal film composition to a base film, causing the liquid crystal molecules in the composition to align in a nematic alignment, and curing the composition. The alignment of the liquid crystal molecules in the film is preferably a nematic hybrid or nematic homeotropic (vertical) alignment.