Patent application number | Description | Published |
20080268180 | OPTICAL COMPENSATION FILM, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY - An optical compensation film and a liquid crystal display characterized in that in a scattered-Light intensity measurement for a film with an incident light with 90° in a scattered light profile of a goniophotometer, in the case of measuring so as to detect a scattered light intensity at the position of 130° from a light source, a difference in scattered light intensity between the case where a film slow axis is installed horizontally on a sample stand and the case where the film slow axis is installed vertically is 0.05 or less. | 10-30-2008 |
20090174845 | Optical Compensating Resin Film for Polarizing Plate, Method for Manufacturing Optical Compensating Resin Film, Polarizing Plate and Liquid Crystal Display Device - Provided are an optical compensating resin film having improved contrast, a polarizing plate, which uses the optical compensating resin film and has excellent smoothness without color nonuniformity, and a liquid crystal display device. The optical compensating resin film is characterized in that the crystallinity degree is 0.15 or less. | 07-09-2009 |
20100309552 | RETARDATION FILM - Provided is a retardation film having an excellent front contrast. It is possible o measure a scattered light intensity of a film of a 90-degree incident light of a scattered light profile by a goniophotometer. Provided is retardation film characterized in that the difference between the scattered light intensity integration values obtained when the film slow axis is arranged horizontally and vertically on a sample table is 0.1 or below in measurement to detect a scattered light intensity at the position of 95 to 165 degrees from a light source. | 12-09-2010 |
20110019138 | RETARDATION FILM - Provided is a retardation film having an excellent front contrast. It is possible o measure a scattered light intensity of a film of a 90-degree incident light of a scattered light profile by a goniophotometer. Provided is retardation film characterized in that the difference between the scattered light intensity integration values obtained when the film slow axis is arranged horizontally and vertically on a sample table is 0.1 or below in measurement to detect a scattered light intensity at the position of 95 to 165 degrees from a light source. | 01-27-2011 |
20120013828 | POLARIZING PLATE, METHOD FOR PRODUCING POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY DEVICE - Disclosed are: a polarizing plate having visibility and viewing angle characteristics; and a liquid crystal display device using the polarizing plate. Specifically disclosed is a polarizing plate which is obtained by sandwiching a polarizer between first and second cellulose ester films. The polarizing plate is characterized in that the first cellulose ester film is formed from a cellulose ester having a total degree of substitution of acyl groups of 2.8-3.0, and the second cellulose ester film is formed from a cellulose ester having a total degree of substitution of acyl groups of 2.0-2.6, and has a retardation value Ro of 30-200 nm and a retardation value Rt of 70-300 nm. The polarizing plate is also characterized in that the first and second cellulose ester films are subjected to a saponification treatment wherein when the saponification condition is expressed as a saponification index M, the saponification index M1 of the first cellulose ester film and the saponification index M2 of the second cellulose ester film satisfy the relation of M1>M2. | 01-19-2012 |
20120207976 | POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY EMPLOYING THE SAME - A polarizing plate, includes: a hard coat film; a protective film; and a polarizer sandwiched between the hard coat film and the protective film, wherein the hard coat film includes a first cellulose ester film being contact with the polarizer, and a hard coat layer provided on the first cellulose ester film, wherein the hard coat layer includes a composition containing a curable resin and at least one thermoplastic resin selected from a group of a thermoplastic polyester resin, a thermoplastic polyester urethane resin, and an acrylic resin not having an ethylenically-unsaturated double bond, and wherein the hard coat layer is a cured layer of the composition, and has 500 to 200,000 protrusions per mm | 08-16-2012 |
20120292580 | OPTICAL FILM - Provided is an optical film which exhibits low internal haze, low internal scattering, and excellent moisture resistance though the film contains diacetylcellulose having excellent retardation-inducing properties. An optical film characterized by comprising: a cellulose acetate α which has a 6% viscosity of 70 to 250 mPas and a degree of acetyl substitution of 2.0 to less than 2.5; another cellulose acetate β which has a 6% viscosity lower than that of the cellulose acetate α and a degree of acetyl substitution of 2.0 to less than 2.5; ester compound C which has 1 to 12 pyranose or furanose structures of at least one kind and in which all or a part of the OH groups of the structures are esterified; and polyester D represented by Formula (1). B-(G-A)n-G-B (1). | 11-22-2012 |
20120320318 | METHOD OF MANUFACTURING POLARIZING PLATE, POLARIZING PLATE MANUFACTURED USING THE METHOD, AND LIQUID CRYSTAL DISPLAY DEVICE - Disclosed is a method of manufacturing a polarizing plate safe in operation, less burdensome on the environment, and with excellent adhesion to a polarizer, also disclosed are a polarizing plate manufactured using said method, and a liquid crystal display device using said polarizing plate. In the method of manufacturing a polarizing plate, a polarizing plate is manufactured in which a protective film which is hydrophilized by alkali saponification is laminated to at least one surface of the polarizer. In the method, said protective film contains cellulose acetate, and the surface free energy before alkali saponification of said protective film satisfies formula (S | 12-20-2012 |
20130135565 | RETARDATION FILM, POLARIZING PLATE USING SAME, AND LIQUID CRYSTAL DISPLAY DEVICE - The purpose of the present invention is to provide: a retardation film which uses a low-substituted cellulose ester and has improved retardation after saponification and improved wet heat stability of internal haze; a polarizing plate which uses the retardation film; and a liquid crystal display device. An optical film of the present invention contains a cellulose ester and a compound represented by general formula (1), and is characterized in that the compound has an average degree of substitution within the range of 3.0-6.0 and contains a component having a degree of substitution of 4 or less in an amount of 30-80% by mass (inclusive). (In the formula, R | 05-30-2013 |
20140326930 | PHASE DIFFERENCE FILM, POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY DEVICE - The purpose of the present invention is to provide a cellulose acetate film having excellent adhesion to a polarizer, and in which there is minimal change in retardation with respect to residual solvent during film stretching. This phase difference film contains cellulose acetate α having a degree of acetyl substitution of 2.1 or less, cellulose acetate β having a degree of acetyl substitution of 2.3-2.5, and a compound having a van der Waals volume of 500 Å | 11-06-2014 |