Abstract: The present disclosure relates to a method of preparing an organic zinc catalyst through solid phase blending that does not require a solvent and a washing process, and a method of preparing a polyalkylene carbonate resin by using the organic zinc catalyst prepared thereby.

Abstract: Provided are a method for preparing a pixel defining layer comprising applying and coating, pre-baking, exposing to light, developing, and post-baking of a photosensitive composition containing a colorant having a pigment with an average particle size of 100 nm or less, wherein the coated film generated after the post-baking has an optical density of 0.8/?m to 2.0/?m, a roughness of 3.0 nm or less, and no residue; and an organic light emitting display device comprising the pixel defining layer obtained by the method which has improved display reliability and lifetime as well as vivid colors.

Abstract: The present disclosure relates to a brake disc including a braking part having a circular plate shape having a hollow portion and a plurality of coupling portions protruding and extending from an inner diameter surface thereof, and a hat part disposed in the hollow portion and having a plurality of insertion portions protruding laterally, in which the plurality of coupling portions is respectively coupled to the plurality of insertion portions, and the coupling portion of the braking part and the insertion portion of the hat part are joined to only one of an outboard portion or an inboard portion of the braking part. According to the present disclosure, it is possible to reduce noise occurring at a position at which the hat part and the braking part are coupled to each other and improve cooling performance.

Abstract: An object of the present disclosure is to improve display reliability and lifetime as well as vivid colors. When there remain residues in the washing part due to incomplete removal during the developing step, it can cause dark spots or pixel off due to the residues, and thus residue-free pixels can be formed by optimizing the temperature and time for developing. Additionally, when the amount of outgas in the panel after post-baking is 15 ppm or more, it may cause a reduction in luminance and lifetime due to pixel shrinkage. Therefore, in order to minimize the amount of outgas after completion of the post-baking process, the generation of outgas in the panel state can be minimized by generating sufficient fume in the post-baking step, in addition to forming clean pixels in the developing step.

Abstract: A scroll compressor including a housing, a motor in the housing, an orbiting scroll, and a fixed scroll. An injection valve assembly is provided between the fixed scroll and the housing and further includes a cover plate, a valve plate, a gasket retainer, and an injection valve. The compressor capable of increasing a surface pressure at a position at which the injection valve of the injection valve assembly needs to be supported, and preventing deformation of the gasket retainer by reducing a bead height of the gasket retainer.

Abstract: Disclosed are a broadcasting apparatus, a user terminal, a broadcasting system comprising same, and a control method thereof.

Abstract: Disclosed are a user terminal, a video call translation device, a video call translation system comprising same, and a control method for same. The video call translation device according to one aspect may comprise: a communications unit which supports a video call service between a plurality of user terminals via a communication network; an extraction unit which generates an image file and an audio file by using a video call-associated video file collected from each of the plurality of user terminals, and extracts original language information from at least one of the image file and the audio file; a translation unit which generates translation information from the original language information; and a control unit which controls transmission of an interpreted/translated video in which at least one of the extracted original language information and the translation information is mapped to the video call-associated video file.

Abstract: Disclosed are a user terminal and a control method therefor. A user terminal according to an aspect may include: an extraction unit that extracts original language information pertaining to each character on the basis of at least one among a video file and an audio file separately generated from a moving image file; a translation unit that generates translation information obtained by translating the original language information according to a selected language; and a control unit that provides at least one among the original language information and the translation information.

Abstract: The present invention relates to a floating offshore power generation apparatus using an ionic polymer-metal composite, including: a floating body floating on water; an ionic polymer-metal composite that is attached to the floating body and generates electricity by bending in a vertical or horizontal direction according to the flowing state of sea water; a rectification unit that converts, into a direct electric current, the electricity generated in the form of an alternating electric current in the ion polymeric metal composite; and a load unit that is connected to the rectification unit and supplies or stores the produced electricity. According to the present invention, ionic polymer-metal composites having hydrophilicity are attached to one floating body instead of complicated mechanical parts vulnerable to the offshore environment, thereby facilitating maintenance and increasing power generation efficiency per unit area.

Abstract: The present invention relates to a floating offshore power generation apparatus using an ionic polymer-metal composite, including: a floating body floating on water; an ionic polymer-metal composite that is attached to the floating body and generates electricity by bending in a vertical or horizontal direction according to the flowing state of sea water; a rectification unit that converts, into a direct electric current, the electricity generated in the form of an alternating electric current in the ion polymeric metal composite; and a load unit that is connected to the rectification unit and supplies or stores the produced electricity. According to the present invention, ionic polymer-metal composites having hydrophilicity are attached to one floating body instead of complicated mechanical parts vulnerable to the offshore environment, thereby facilitating maintenance and increasing power generation efficiency per unit area.

Abstract: A laser projection system capable of irradiating a light beam for alignment is provided. The alignment laser projection system comprises a reflection unit, a moving reflection unit, irradiation units that irradiate light to the reflection unit and the moving reflection unit, a guide unit which drives the moving reflection unit, a housing which contains a driving unit, a control unit which controls the irradiation unit and the driving unit, and a display unit which displays control states. In irradiating a laser beam, the laser projection system resolves the problem of instable power supply and information transfer due to the damage in a cable apparatus caused by alternating movements of an irradiation unit such that it supplies stable alignment line in repetitive works.

Abstract: A laser projection system capable of irradiating a light beam for alignment is provided. The alignment laser projection system comprises a reflection unit, a moving reflection unit, irradiation units that irradiate light to the reflection unit and the moving reflection unit, a guide unit which drives the moving reflection unit, a housing which contains a driving unit, a control unit which controls the irradiation unit and the driving unit, and a display unit which displays control states. In irradiating a laser beam, the laser projection system resolves the problem of instable power supply and information transfer due to the damage in a cable apparatus caused by alternating movements of an irradiation unit such that it supplies stable alignment line in repetitive works.