摘要:
Provided is an oriented laminated film, characterized in that the film is obtained by alternately laminating Layer A and Layer B such that reflection is generated by optical interference due to a difference in refractive indices of Layer A and Layer B, wherein Layer A includes an aromatic polyester containing trimethylene-2,6-naphthalenedicarboxylate as a main repeating unit and has a layer thickness in a range of 0.05 to 0.5 μm and Layer B includes a polylactic acid composition and has a layer thickness in a range of 0.05 to 0.5 μm, and a reflectivity curve thereof for light in a wavelength range of 400 to 1,600 nm has a reflection peak having a maximum reflectivity which is at least 20% higher than the reflectivity baseline. The present invention can provide a laminated film having high reflectivity with improved thickness variation associated with stretching treatment and improved hue irregularity attributable to a state of lamination.
摘要:
Provided is a film made of a composition obtained by mixing a compound at least having a ring structure containing one carbodiimide group, the first nitrogen and second nitrogen thereof being linked together through a linking group, with a polymer compound having an acidic group. A film which has improved hydrolysis resistance and from which no free isocyanate compounds are produced can be provided.
摘要:
A stereocomplex polylactic acid resin composition containing an amide compound represented by the following general formula (1) and a film composed thereof. A stereocomplex polylactic acid excellent in transparency and a resin composition can be provided. (In the formula, R1 represents a residue obtainable by removing all carboxyl groups from 1,2,3-propane tricarboxylic acid or 1,2,3,4-butane tetracarboxylic acid; three or four R2 may be the same as or different from each other and each represents a hydrogen atom or a linear or branched chain alkyl group having 1 to 10 carbon atoms; and k represents an integer of 3 or 4.)
摘要:
The present invention provides a retardation film which can remarkably improve the controllability of retardation, and can also sufficiently control the wavelength dependency of retardation. The retardation film of the present invention can achieve a widening of the viewing angle at a high degree, when it is applied to a liquid crystal display device. Further, the present invention provides a laminated polarizing which comprises the retardation film and enables widening the viewing angle. Furthermore, the present invention provides a liquid crystal display device having high performance, especially a widened viewing angle. The retardation film of the present invention comprises a structural body which simultaneously has form birefringence and molecular-orientation birefringence. Specifically, the retardation film comprises a periodic structure (13) having a unit of at least two layers (11, 12) having different average refractive indices from each other, and at least one of the at least two layers is a layer having optical anisotropy due to molecular-orientation birefringence.
摘要:
The present invention provides a retardation film which can remarkably improve the controllability of retardation, and can also sufficiently control the wavelength dependency of retardation. The retardation film of the present invention can achieve a widening of the viewing angle at a high degree, when it is applied to a liquid crystal display device. Further, the present invention provides a laminated polarizing which comprises the retardation film and enables widening the viewing angle. Furthermore, the present invention provides a liquid crystal display device having high performance, especially a widened viewing angle. The retardation film of the present invention comprises a structural body which simultaneously has form birefringence and molecular-orientation birefringence. Specifically, the retardation film comprises a periodic structure (13) having a unit of at least two layers (11, 12) having different average refractive indices from each other, and at least one of the at least two layers is a layer having optical anisotropy due to molecular-orientation birefringence.
摘要:
The present invention is to provide a polarizing plate having a retardation function while having excellent environmental resistance. The invention is concerned with a polarizing plate including a polarizer having, on at least one surface thereof, a protective film having a function as a retardation film via an adhesive layer, wherein the adhesive layer is formed of an adhesive containing a polyurethane; and the protective film is composed of a polycarbonate based resin or an amorphous polyolefin resin having a glass transition temperature in the range of from 100° C. to 180° C., which is a copolymer containing an ethylene unit represented by the following formula (E) and a cyclic olefin unit represented by the following formula (F):
摘要:
A laminated polarizing film that is capable of enhancing a viewing angle of a liquid crystal display device, particularly in an IPS mode, is provided. The laminated polarizing film can be obtained by adhering a phase retardation film and a polarizing film by a roll-to-roll process. Specifically, the laminated polarizing film contains a negative substantially uniaxial optical film containing a thermoplastic polymer having a negative molecular polarizability anisotropy, a positive optical film containing a thermoplastic polymer having a positive molecular polarizability anisotropy, and a polarizing film, that are laminated at least in this order, a slow axis within a film plane of the negative substantially uniaxial optical film and a slow axis within a film plane of the positive optical film are substantially in parallel to each other, and each are substantially perpendicular to an absorption axis of the polarizing film, a positional relationship between a principal orientation direction of polymer main chains of the negative substantially uniaxial optical film and the absorption axis of the polarizing film is substantially in parallel, and a positional relationship between a principal orientation direction of polymer main chains of the positive optical film and the absorption axis of the polarizing film is substantially perpendicular.
摘要:
A laminated polarizing film that is capable of enhancing a viewing angle of a liquid crystal display device, particularly in an IPS mode, is provided. The laminated polarizing film can be obtained by adhering a phase retardation film and a polarizing film by a roll-to-roll process. Specifically, the laminated polarizing film contains a negative substantially uniaxial optical film containing a thermoplastic polymer having a negative molecular polarizability anisotropy, a positive optical film containing a thermoplastic polymer having a positive molecular polarizability anisotropy, and a polarizing film, that are laminated at least in this order, a slow axis within a film plane of the negative substantially uniaxial optical film and a slow axis within a film plane of the positive optical film are substantially in parallel to each other, and each are substantially perpendicular to an absorption axis of the polarizing film, a positional relationship between a principal orientation direction of polymer main chains of the negative substantially uniaxial optical film and the absorption axis of the polarizing film is substantially in parallel, and a positional relationship between a principal orientation direction of polymer main chains of the positive optical film and the absorption axis of the polarizing film is substantially perpendicular.
摘要:
The transparent sheet of the invention is used in a display device which comprises at least one transparent body and a retardation film, where reflection of display light from the display light source onto the transparent sheet forms an image of the display light in the forward field of vision of the observer and renders it visible to the observer, the retardation film being positioned with specified conditions. It is thereby possible to obtain a display device with high display quality and minimal double images. The display device used may be, for example, a HUD for display of information in the forward field of vision of a vehicle, ship or the like.
摘要:
A uniaxially or biaxially oriented film which is made from a specific polycarbonate having a fluorene ring and a glass transition temperature of 165° C. or higher and which has a heat shrinkage factor when it is heated at 90° C. for 500 hours of 0.1% or less, and a ratio of retardation R(450) within the film plane at a wavelength of 450 nm to retardation R(550) within the film plane at a wavelength of 550 nm of 1 to 1.06. This film can be used in a high-quality liquid crystal display device such as a vertical alignment liquid crystal display device and is useful as a retardation film which almost solves a frame problem.