Patent application number | Description | Published |
20100068419 | RETARDATION FILM, A METHOD FOR PREPARING RETARDATION FILM AND POLARIZER COMPRISING THE RETARDATION FILM - There is provided a retardation film capable of adjusting an angle between a proceeding direction of a film and an optical axis of liquid crystal by employing an alignment layer formed of polymers including norbornene and improving thermal stability and photoreaction rate, a method for preparing the retardation film and a polarizer comprising the retardation film. The retardation film includes a substrate, an alignment layer formed on the substrate and made of polymers including norbornene, and an alignment layer fixing layer formed on the alignment layer and made of liquid crystal materials; the method for preparing a retardation film includes: forming a polymer layer by coating a substrate with a polymer solution including norbornene and drying the polymer solution, forming an alignment layer by irradiating the copolymer layer with linearly polarized ultraviolet rays in a predetermined direction relative to a proceeding direction of a film to give an orientation to the copolymer layer, forming a liquid crystal layer on the alignment layer by coating the alignment layer with a nematic liquid crystal solution and drying the nematic liquid crystal solution, and fixing the orientation of the liquid crystal layer by curing the liquid crystal layer; and the polarizer includes the retardation film and a polarizer film, both of which are stacked with each other. The retardation film has improved thermal stability and light reaction speed, and the retardation film whose optical axis has a desired orientation angle relative to a proceeding direction of the retardation film may be easily prepared through the irradiation of polarized ultraviolet rays. | 03-18-2010 |
20110130532 | NOVEL COMPOUNDS, CATALYST COMPOSITION COMPRISING THE SAME, AND METHOD FOR PREPARING OF CYCLOOLEFIN-BASED POLYMER USING THE SAME - The present invention relates to a novel metallocene compound, a catalyst composition including the compound and an olefin polymer prepared using the same. The metallocene compound and the catalyst composition can be used for preparing the olefin polymer with high copolymerization degree and high molecular weight. Particularly, the block copolymer with high heat resistance can be prepared by using the metallocene compound, and the olefin polymer with high melting point (Tm) can be obtained, even if co-monomer is used at an increased amount in preparation of olefin polymer. | 06-02-2011 |
20120010380 | PHOTO-REACTIVE NORBORNENE-BASED COPOLYMER, A METHOD OF PREPARING THE SAME, AND AN ALIGNMENT LAYER INCLUDING THE SAME - The present invention relates to a photo-reactive norbornene-based copolymer which has superior miscibility to various organic solvents or additives while exhibiting superior liquid crystal alignment property and can be preferably used to an alignment layer of liquid crystal display device, a method of preparing the same, and an alignment layer including the same. | 01-12-2012 |
20120075560 | PHOTOREACTIVE POLYMER AND ALIGNMENT LAYER COMPRISING THE SAME - Disclosed therein are a photoreactive polymer, and an alignment layer comprising the same that exhibit excellences in alignment rate and alignment stability. The photoreactive polymer comprises a cyclic olefin-based repeating unit with at least one photoreactive substituent, and the maximum absolute value of a variation in dichloric ratio per unit UV dose as given by d(dichloric ratio)/d(mJ/cm | 03-29-2012 |
20120076954 | CYCLIC OLEFIN COMPOUND, PHOTOREACTIVE POLYMER, AND ALIGNMENT LAYER COMPRISING THE SAME - Disclosed therein are a cyclic olefin compound, a photoreactive polymer, and an alignment layer comprising the photoreactive polymer, where the cyclic olefin compound can be used to provide the photoreactive polymer having not only excellences in liquid crystal alignment and alignment rate but also readiness for change in the alignment direction depending on the polarization direction. | 03-29-2012 |
20130334718 | BIAXIAL-OPTICAL POLYNORBORNENE-BASED FILM AND MTEHOD OF MANUFACTURING THE SAME, INTEGRATED OPTICAL COMPENSATION POLARIZER HAVING THE FILM AND METHOD OF MANUFACTURING THE POLARIZER, AND LIQUID CRYSTAL DISPLAY PANEL CONTAINING THE FILM AND/OR POLARIZER - Disclosed is a method of manufacturing a biaxial polynorbornene-film having a compensation film which has good light transmittance and a uniform in-plane retardation value and can function as both a negative C-plate and an A-plate. | 12-19-2013 |
20140002785 | PHOTO-CURABLE COMPOSITION, OPTICAL ANISTROPIC FILM AND ITS PREPARATION METHOD | 01-02-2014 |
20140034883 | POLYMERIZABLE LIQUID CRYSTAL COMPOUNDS, LIQUID CRYSTAL COMPOSITION COMPRISING THE COMPOUNDS, AND OPTICALLY ANISOTROPIC BODY COMPRISING THE COMPOSITION - The present invention relates to a polymerizable liquid crystal compound, a liquid crystal composition including the same, and an optically anisotropic body. The polymerizable liquid crystal compound according to the present invention has not only high birefringence but also excellent coating orientation, and thus it is possible to prepare a optically anisotropic body which is thin but superior in optical properties. | 02-06-2014 |
20140049739 | LIQUID CRYSTAL ALIGNMENT LAYER AND LIQUID CRYSTAL CELL COMPRISING THE SAME - The present invention relates to a photoalignment layer, for example, a liquid crystal alignment layer, which is able to realize the wide viewing angle and contrast ratio characteristics of a photopolymerizable alignment layer, and to facilitate interaction with the liquid crystal layer, thereby improving alignment stability and reducing image sticking, and a liquid crystal cell including the same. The liquid crystal alignment layer includes a photo-alignment layer including a photo-alignment polymer having at least partially photo-aligned photoreactive groups; and a mesogen layer including a cured product of a reactive mesogen that is liquid crystal-aligned by the photo-aligned photoreactive group, in which the photo-alignment polymer include a norbornene-based polymer having a particular structure. | 02-20-2014 |
20140072730 | Photoalignment Polyimide Copolymer and Liquid Crystal Alignment Layer - Disclosed therein are a photoalignment polyimide copolymer making it easier to form a liquid crystal alignment layer with excellences in alignment properties, thermal and structural stabilities, and adhesiveness to a substrate, and a liquid crystal alignment layer using the same. The photoalignment polyimide copolymer includes all the three types of repeating units each having a defined structure. | 03-13-2014 |
20140161993 | ACRYLATE COMPOUND HAVING PHOTOREACTIVE GROUP, PHOTOREACTIVE ACRYLATE POLYMER AND PHOTO-ALIGNMENT LAYER COMPRISING THE SAME - Disclosed therein are an acrylate compound having a photoreactive group, a photoreactive acrylate polymer, and a photo-alignment layer comprising the same that not only have excellences in alignment properties and alignment rate and readiness for change in the alignment direction based on the polarization direction of radiation but also exhibit a high solubility to organic solvents and good workability. | 06-12-2014 |