Abstract: The present invention relates to a polyolefin which exhibits a narrow molecular weight distribution, high strength, and a high stretching ratio, and a preparation method therefor. According to the present invention, it is possible to provide polyethylene with high catalyst activity, high molecular weight, and controlled molecular weight distribution by using, in polymerization of an olefin monomer, a hybrid supported metallocene catalyst in which a borate compound is used as a second cocatalyst. In addition, if the polyolefin is processed, it is possible to produce a fiber with excellent mechanical properties and an excellent stretching ratio.

Abstract: Disclosed a pregabalin-containing, high swellable, oral sustained-release triple layer tablet suitable for administration once daily.

Abstract: Disclosed a pregabalin-containing, high swellable, oral sustained-release triple layer tablet suitable for administration once daily.

Abstract: Provided is an olefin-based polymer with excellent processability. The olefin-based polymer according to the present invention has a high molecular weight and a broad molecular weight distribution to show excellent processability and improved mechanical properties, thereby being usefully applied according to the intended use.

Abstract: An apparatus and a method for testing drilling efficiency of a drill bit, according to the present invention, calculate an amount of fractured rock according to a button arrangement, thereby obtaining an optimum button arrangement.

Abstract: A drill bit including a button array having different radii extending from the center of a head section, and more particularly, to a drill bit in which buttons are arranged so as to have different radii from the center of a drill bit head section, thereby striking bedrock points having different radii and improving the efficiency of a drilling operation.

Abstract: The present invention relates to a polyolefin which exhibits a narrow molecular weight distribution, high strength, and a high stretching ratio, and a preparation method therefor. According to the present invention, it is possible to provide polyethylene with high catalyst activity, high molecular weight, and controlled molecular weight distribution by using, in polymerization of an olefin monomer, a hybrid supported metallocene catalyst in which a borate compound is used as a second cocatalyst. In addition, if the polyolefin is processed, it is possible to produce a fiber with excellent mechanical properties and an excellent stretching ratio.

Abstract: The present invention relates to polyolefin that has high molecular weight, wide molecular weight distribution and high long chain branch content, and thus, has excellent environmental crack resistance and processibility. The polyolefin of the present invention has excellent processibility and stability, and thus, may be preferably used as a food container, a bottle cap, and the like.

Abstract: The battery pack according to the present invention includes a plurality of battery cells generating an electric current to which leads are connected in order to supply the generated electric current. At least two of the leads of the battery cells are welded in the plurality of battery cells. A shock absorbing unit is formed bent between the welded connection portion and the battery cell of each of the leads. Therefore, it is possible to minimize damage to the connection portions of the leads caused by external vibration or shock, and to improve the durability of the leads.

Abstract: An apparatus and a method for testing drilling efficiency of a drill bit, according to the present invention, calculate an amount of fractured rock according to a button arrangement, thereby obtaining an optimum button arrangement.

Abstract: A drill bit including a button array having different radii extending from the center of a head section, and more particularly, to a drill bit in which buttons are arranged so as to have different radii from the center of a drill bit head section, thereby striking bedrock points having different radii and improving the efficiency of a drilling operation.

Abstract: Disclosed are a novel rebamipide prodrug, a method for preparing the same, and use thereof. Also, a pharmaceutical composition comprising the novel rebamipide prodrug as an active ingredient is provided. The rebamipide prodrug is increased 25-fold in absorption rate compared to rebamipide itself, and can be applied to the prophylaxis or therapy of gastric ulcer, acute gastritis, chronic gastritis, xerophthalmia, cancer, osteoarthritis, rheumatoid arthritis, or obesity.

Abstract: The battery pack according to the present invention includes a plurality of battery cells generating an electric current to which leads are connected in order to supply the generated electric current. At least two of the leads of the battery cells are welded in the plurality of battery cells. A shock absorbing unit is formed bent between the welded connection portion and the battery cell of each of the leads. Therefore, it is possible to minimize damage to the connection portions of the leads caused by external vibration or shock, and to improve the durability of the leads.

Abstract: A method of fabricating a semiconductor device, in which an interference effect between word lines is substantially reduced or eliminated, includes forming a plurality of gate patterns on a substrate; forming a first insulating layer between the gate patterns, the first insulating layer filling a region between the gate patterns; etching the first insulating layer to remove a portion of the first insulating layer to a predetermined depth; and forming a second insulating layer on the gate patterns and the first insulating layer. A low-dielectric-constant material is formed between the gate patterns.

Abstract: Disclosed are spherical particles of clopidogrel bisulfate and a pharmaceutical composition containing the same. The spherical particles can be used for preparing a tablet having sufficient hardness through direct compression, by improving unformulable properties of clopidogrel bisulfate such as compressibility, flowability and strong surface electrostatic charges, reduce a problem in compressing tablets such as weight variation, sticking, etc., and the risk of form conversion, and improve physiochemical stability. Therefore, the spherical particles of the present invention may be used as therapeutics for arteriosclerosis, stroke, myocardial infarction and atherosclerosis.

Abstract: A touch screen display apparatus includes a first substrate including a pixel electrode and a lower sensor electrode, a second substrate facing the first substrate and including a common electrode and an upper sensor electrode facing the lower sensor electrode, a liquid crystal layer interposed between the substrates, a first alignment layer disposed on the pixel electrode and the common electrode, a second alignment layer disposed on the lower sensor electrode, and a third alignment layer disposed on the upper sensor electrode. The second or third alignment layers aligns the liquid crystal layer in a different direction from a direction the first alignment layer aligns the liquid crystal layer. When pressure is applied onto a point on the first or second substrate, a distance and a capacitance between the lower sensor electrode and the upper sensor electrode at the point are changed to detect a position of the point.

Abstract: A semiconductor device includes a substrate, a plurality of gate structures, a first insulating interlayer pattern, and a second insulation layer pattern. The substrate has an active region and a field region, each of the active region and the field region extends in a first direction, and the active region and the field region are alternately and repeatedly arranged in a second direction substantially perpendicular to the first direction. The gate structures are spaced apart from each other in the first direction, each of the gate structures extends in the second direction. The first insulation layer pattern is formed on a portion of a sidewall of each gate structure. The second insulation layer pattern covers the gate structures and the first insulation layer pattern, and has an air tunnel between the gate structures, the air tunnel extending in the second direction.

Abstract: A method of fabricating a semiconductor device, in which an interference effect between word lines is substantially reduced or eliminated, includes forming a plurality of gate patterns on a substrate; forming a first insulating layer between the gate patterns, the first insulating layer filling a region between the gate patterns; etching the first insulating layer to remove a portion of the first insulating layer to a predetermined depth; and forming a second insulating layer on the gate patterns and the first insulating layer. A low-dielectric-constant material is formed between the gate patterns.

Abstract: The present invention provides an optical film that includes i) a (meth)acrylic resin, and 5 to 45 parts by weight of ii) a graft copolymer, prepared by grafting a (meth)acrylic resin onto a copolymer of (meth)acrylic rubber and aromatic vinyl compound, based on 100 parts by weight of the i) (meth)acrylic resin, and an electronic device including the optical film.

Abstract: In manufacturing a thin film transistor array substrate, a passivation film is formed over the transistors. A first photoresist pattern is formed over the passivation film, with a first portion partially overlying at least one source/drain electrode of each transistor and overlying each pixel electrode region, and with a second portion thicker than the first portion. The passivation film is patterned using the first photoresist pattern as a mask. The first photoresist pattern's first portion is removed to form a second photoresist pattern which protrudes upward around the pixel electrode regions. A transparent conductive film is formed with recesses in the pixel electrode regions. A masking pattern is formed over the transparent film in each pixel electrode region, the masking pattern's top surface being below a top of the transparent film. The transparent film is patterned using the masking pattern as a mask to form the pixel electrodes.