Patent application number | Description | Published |
20090137743 | Optical Planar Thermoplastic Resin Composition - Disclosed is an optical planar thermoplastic resin composition including a lactone ring-containing polymer as a main component thereof, or including a lactone ring-containing polymer and at least one other thermoplastic resin. The optical planar thermoplastic resin composition of the present invention has high transparency, high heat resistance, and high optical isotropy, and therefore, can sufficiently exhibit characteristics according to various optical applications. | 05-28-2009 |
20100020396 | POLARIZER PROTECTIVE FILM, POLARIZING PLATE, AND IMAGE DISPLAY APPARATUS - Provided are: a polarizer protective film, which is allowed to express excellent UV-absorbing ability by using a UV-absorbing monomer as a raw material, has excellent heat resistance and excellent optical transparency, and has much less coloring and foaming; a polarizing plate with less defects in an outer appearance, using the polarizer protective film; and an image display apparatus of high quality, using the polarizing plate. The polarizer protective film of the present invention has a light transmittance at 380 nm in a thickness of 80 μm of 30% or less, and is obtained by molding a forming material that contains a resin component containing as a main component a (meth)acrylic resin obtained by polymerizing a monomer composition containing a UV-absorbing monomer and a (meth)acrylic monomer by extrusion molding. | 01-28-2010 |
20100168363 | Low Birefringent Copolymers - The low birefringent material of the present invention is, for example, an acrylic copolymer including a lactone ring structure which can provide a positive retardation and a structural unit which can provide a negative retardation, the acrylic copolymer satisfying following conditions that: (A) the copolymer has a glass transition temperature (Tg) of 100° C. or higher; (B) a film comprising the copolymer has a total light transmittance of 85% or higher; and (C) a retardation per 100 μm of thickness in an in-plane direction of the film is 10 nm or lower, and a difference between a retardation per 100 μm of thickness in an in-plane direction of the film after the film is drawn by 1.5 times and a retardation per 100 μm of thickness in an in-plane direction of the film before the film is drawn is 20 nm or lower. The low birefringent material of the present invention has excellent transparency and heat resistance, also has other desired properties including mechanical strength and forming processability, has low coloration properties when no nitrogen atom is contained, and particularly has high optical isotropy. | 07-01-2010 |
Patent application number | Description | Published |
20090059369 | POLARIZER PROTECTIVE FILM, POLARIZING PLATE, AND IMAGE DISPLAY APPARATUS - The present invention is to provide: a polarizer protective film having an excellent UV absorbing ability, excellent heat resistance, and excellent optical transparency; a polarizing plate having less defects in an outer appearance using the polarizer protective film and a polarizer; and an image display apparatus of high quality using the polarizing plate. The polarizer protective film of the present invention includes as a main component a (meth) acrylic resin and a UV absorber, in which: a light transmittance at 380 nm of the polarizer protective film is 30% or less when the film has a thickness of 80 μm; a difference between a Tg of the polarizer protective film and a Tg of the same film as the polarizer protective film except that it does not contain the UV absorber is within 3° C.; and YI at a thickness of 80 μm is 1.3 or less. | 03-05-2009 |
20090067047 | POLARIZER PROTECTIVE FILM, POLARIZING PLATE, AND IMAGE DISPLAY APPARATUS - Provided is a polarizer protective film, which has high heat resistance, high transparency, high optical characteristics, and high mechanical strength, and is excellent in adhesion with respect to a polarizer. Further, provided are a polarizing plate using such a polarizer protective film and a polarizer, which has high adhesion with respect to the polarizer protective film and the polarizer and is excellent in optical characteristics, and an image display apparatus of high quality using such a polarizing plate. | 03-12-2009 |
20090153965 | Polarizer Protective Film, Polarizing Plate, and Image Display Apparatus - Provided are: a polarizer protective film having excellent optical properties and mechanical strength, with the productivity and reworking property enhanced; a polarizing plate with less defects in an outer appearance, using a polarizer formed of the polarizer protective film and a polyvinyl alcohol-based resin; and an image display apparatus of high quality using the polarizing plate. The polarizer protective film of the present invention includes as a main component a (meth)acrylic resin, which is stretched by longitudinal stretching and/or lateral stretching. | 06-18-2009 |