Abstract: The present application relates to a liquid crystal cell, a method for preparing a liquid crystal cell and a display device. An exemplary liquid crystal cell may be applied to various types of display devices so as to control a viewing angle or light transmittance of the display device.

Abstract: The present invention relates to a positive photosensitive polyimide composition that includes polyimide, a polyamic acid, and a photoactive compound. An organic insulating layer for organic light-emitting devices (OLED), which includes the positive photosensitive polyimide composition, may control a taper angle and outgassing, and has excellent adhesion in respects to a substrate, water repellent control ability, and storage stability and the like.

Abstract: Polyimide-based polymers and copolymers thereof are provided. Further provided is a positive type photoresist composition comprising at least one of the polyimide-based polymers and copolymers thereof as a binder resin. The photoresist composition exhibits high resolution, high sensitivity, excellent film characteristics and improved mechanical properties, which are required for the formation of semiconductor buffer coatings.

Abstract: A liquid crystal cell, a precursor of the liquid crystal layer, a method of manufacturing a liquid crystal cell, and use of the liquid crystal cell are provided. The liquid crystal cell may be manufactured simply in a consecutive manner using a roll-to-roll process. Also, the liquid crystal cell may be realized as a flexible device, and have an excellent contrast ratio. Such a liquid crystal cell can be applied in various applications including smart windows, window-protecting films, flexible display devices, active retarders for displaying 3D images, or viewing angle-adjusting films.

Abstract: Polyimide-based polymers and copolymers thereof are provided. Further provided is a positive type photoresist composition comprising at least one of the polyimide-based polymers and copolymers thereof as a binder resin. The photoresist composition exhibits high resolution, high sensitivity, excellent film characteristics and improved mechanical properties, which are required for the formation of semiconductor buffer coatings.

Abstract: Provided are processes of preparing glycolurils and cucurbiturils using the glycolurils by microwave irradiation. Therefore, condensation and cyclization reactions for preparation of industrially widely applied cucurbituril derivatives, oxidation reaction for preparation of hydroxycucurbiturils, and condensation and cyclization reactions between glycolurils and paraformaldehyde or a formaldehyde solution can be efficiently performed in a short time.

Abstract: Polyimide-based polymers and copolymers thereof are provided. Further provided is a positive type photoresist composition comprising at least one of the polyimide-based polymers and copolymers thereof as a binder resin. The photoresist composition exhibits high resolution, high sensitivity, excellent film characteristics and improved mechanical properties, which are required for the formation of semiconductor buffer coatings.

Abstract: Disclosed is a copolymer for liquid crystal alignment having a photoreactive group, a mesogen group, a thermosetting group, and a crosslinking group, a liquid crystal aligning layer including the copolymer for liquid crystal alignment, and a liquid crystal display including the liquid crystal aligning layer. Since the liquid crystal aligning layer has excellent thermal stability and no residual image, the liquid crystal aligning layer is usefully applied to the liquid crystal display.

Abstract: In a method for preparing a polyimide resin by reacting diamine and dianhydride, the polyimide resin is polymerized under the presence of a solvent having a boiling point ranging from 130° C. to 180° C. so as to be curable at a low temperature ranging from 150° C. to 250° C. Because the polyimide is curable even at a low temperature, when the polyimide resin is used as an electronic material, damage to equipment due to an otherwise high temperature process can be minimized, and in addition, the polyimide resin can be extensively used as an electronic material such as for a plastic substrate, or the like.

Abstract: Provided are hydroxycucurbituril derivatives, their preparation methods and uses. The hydroxycucurbituril derivative is easy to further functionalize with enhanced solubility in common solvents, thereby providing wider applications.

Abstract: The present invention relates to a novel cyclic olefin compound, a polymer including the cyclic olefin compound, a liquid crystal alignment film including the polymer, and a liquid crystal display device including the liquid crystal alignment film. Since the polymer includes the cyclic olefin compound as a main chain, the thermal stability is excellent and the photoreactive speed is high. Accordingly, the production time can be reduced, the production cost can be reduced, and the anchoring force of the liquid crystal can be increased because the alignment property is stabilized due to the curing.

Abstract: A photosensitive resin composition is provided. The photosensitive resin composition comprises a) an alkali-soluble polyimide resin, b) an alkali-soluble novolak resin, c) a photosensitizer, and d) an organic solvent. The photosensitive resin composition is resistant to heat and can be used to form a pattern whose lateral angles are easily controllable. A large difference in developability between exposed and unexposed portions of the photosensitive resin composition is caused when patterning. The photosensitive resin composition is advantageous in terms of sensitivity, resolution, heat resistance and adhesiveness. Particularly, the lateral angles of the pattern can be easily controlled by varying the contents of the alkali-soluble resins. Therefore, the photosensitive resin composition is useful in the formation of an insulating film pattern of an organic light emitting diode (OLED).

Abstract: The present invention relates to a positive photosensitive polyimide composition that includes polyimide, a polyamic acid, and a photoactive compound. An organic insulating layer for organic light-emitting devices (OLED), which includes the positive photosensitive polyimide composition, may control a taper angle and outgassing, and has excellent adhesion in respects to a substrate, water repellent control ability, and storage stability and the like.

Abstract: The present disclosure provides a cucurbituril derivative-bonded solid substrate in which cucurbituril derivatives of Formula 1 are covalently bonded to a modified solid substrate of Formula 2. The cucurbituril derivative provides functional groups which can be used to link biomaterials to the substrate. Protein chips, gene chips, and sensors for biomaterial assays having the cucurbituril derivative-bonded solid substrate are also provided.

Abstract: Provided are nanoparticles prepared by the aggregation of cucurbituril derivatives and having a particle size of 1 to 1,000 nm, a pharmaceutical composition in which a pharmaceutically active substance is loaded into the nanoparticles, and preparation methods thereof.

Abstract: Polyimide-based polymers and copolymers thereof are provided. Further provided is a positive type photoresist composition comprising at least one of the polyimide-based polymers and copolymers thereof as a binder resin. The photoresist composition exhibits high resolution, high sensitivity, excellent film characteristics and improved mechanical properties, which are required for the formation of semiconductor buffer coatings.

Abstract: Provided are an ultrathin polymer film formed by homopolymerization or copolymerization of a cucurbituril derivative with an organic monomer and a method of forming the same. The ultrathin polymer film has a thickness of 10 nm or less, and can retain its film shape even after being separated from a substrate.

Abstract: Provided are a disubstituted cucurbituril that can be easily substituted by a substituent according to a desired usage and a method for preparing the same. The disubstituted cucurbituril has two end functional groups that can covalently bind with a solid substrate or a biochemically useful compound to obtain a cucurbituril-bonded substrate, which enables application of the disubstituted cucurbituril as column packing materials for chromatography, additives to gas separation membranes, catalysts for various chemical reactions, chemical sensors, or biological sensors.

Abstract: The present invention relates to a novel cyclic olefin compound, a polymer including the cyclic olefin compound, a liquid crystal alignment film including the polymer, and a liquid crystal display device including the liquid crystal alignment film. Since the polymer includes the cyclic olefin compound as a main chain, the thermal stability is excellent and the photoreactive speed is high. Accordingly, the production time can be reduced, the production cost can be reduced, and the anchoring force of the liquid crystal can be increased because the alignment property is stabilized due to the curing.

Abstract: A block copolymer of a polyimide and a polyamic acid is disclosed. Further disclosed are a method for producing the block copolymer and a positive type photosensitive composition comprising the block copolymer. The solubility of the photosensitive composition in an alkaline aqueous solution is controlled to achieve high resolution of a pattern. Further disclosed are a protective film of a semiconductor device and an ITO insulating film of an organic light emitting diode (OLED), which are formed using the block copolymer. The protective film and the ITO insulating film are very stable over time.