Abstract: The present invention relates to a conductive metal ink composition which is properly applied for roll-printing process to form conductive pattern, and the method of preparing a conductive pattern using the same. The conductive metal ink composition comprises a conductive metal powder; a non-aqueous solvent comprising a first non-aqueous solvent having a vapor pressure of 3 torr or lower at 25° C. and a second non-aqueous solvent having a vapor pressure of higher than 3 torr at 25° C.; and a coatability improving polymer and is coated for forming the conductive pattern by the roll printing method.

Abstract: A portable terminal includes a main body, a display, a plurality of sensors and a plurality of light elements. The main body includes a wireless communication unit. The display is coupled to the main body and is configured to output visible information. The plurality of sensors is coupled to the body and located at a peripheral region surrounding the display. A corresponding at least one sensor of the sensors is configured to receive user input for controlling a function associated with the visible information. The plurality of light elements is configured to output visible light. Each of the light elements is associated with one of the sensors to output the visible light proximate to the associated sensor. The corresponding at least one sensor is determined by which of the plurality of sensors is configured to permit controlling of the function associated with the visible information.

Abstract: A nitride-based semiconductor light emitting device having an improved structure in which light extraction efficiency is improved and a method of manufacturing the same are provided. The nitride-based semiconductor light emitting device comprises an n-clad layer, an active layer, and a p-clad layer, which are sequentially stacked on a substrate, wherein the n-clad layer comprises a first clad layer, a second clad layer, and a light extraction layer interposed between the first clad layer and the second clad layer and composed of an array of a plurality of nano-posts, the light extraction layer diffracting or/and scattering light generated in the active layer.

Abstract: A refrigerator including left and right doors of rotating opening/closing type and a sliding door between the left and right doors. The left and right rotating opening/closing doors have an improved slim edge structure such that a door thickness is hidden. The sliding door includes door guards to accommodate food.

Abstract: A semiconductor light emitting device having a multiple pattern structure greatly increases light extraction efficiency. The semiconductor light emitting device includes a substrate and a semiconductor layer, an active layer, and an electrode layer formed on the substrate, a first pattern defining a first corrugated structure between the substrate and the semiconductor layer, and a second pattern defining a second corrugated structure on the first corrugated structure of the first pattern.

Abstract: A refrigerator which includes a dispenser installed at a door so as to enable a user to extract water or ice without opening a door. The dispenser includes a case forming an extraction section which is a space through which the desired object is extracted, a push button installed to the case and causing the desired object to be extracted by push operation, a cover having an opening formed by cutting out part thereof and pivotably installed to the case so as to open and close the extraction section, and a lever hinged to the cover so as to open and close the opening and pushing the push button while the opening is open. Therefore, a front appearance of the refrigerator is beautifully maintained. Further, the refrigerator prevents foreign materials such as dust from entering extraction ports through which the desired objects are extracted.

Abstract: A light emitting device comprising a photonic crystal structure having a crystal structure in which nanospheres are densely arranged in a 3D manner, wherein the nanospheres have phosphors excited by an excitation source to emit light of a wavelength longer than a pump photon of the excitation source, wherein the photonic crystal structure has at least a photonic bandgap (PBG) along a specific crystal orientation, and wherein the wavelength of the pump photon overlaps a photonic bandedge region.

Abstract: A nitride-based semiconductor light emitting device having an improved structure in which light extraction efficiency is improved and a method of manufacturing the same are provided. The nitride-based semiconductor light emitting device comprises an n-clad layer, an active layer, and a p-clad layer, which are sequentially stacked on a substrate, wherein the n-clad layer comprises a first clad layer, a second clad layer, and a light extraction layer interposed between the first clad layer and the second clad layer and composed of an array of a plurality of nano-posts, the light extraction layer diffracting or/and scattering light generated in the active layer.

Abstract: Disclosed is a polarized light emitting diode (LED) capable of emitting polarized light in the front direction thereof by forming a first grating layer on a quantum well layer and forming a second grating layer on a substrate. The polarized LED includes a nitride thin film formed on a substrate, a quantum well layer formed on the nitride thin film, a first grating layer formed on the quantum well layer to allow a part of light generated from the quantum well layer to pass through the first grating layer and to reflect remaining light, and a second grating layer formed on the substrate to rotate the light reflected from the first grating layer such that the reflected light passes through the first grating layer.

Abstract: A nitride-based semiconductor light emitting device having an improved structure in which light extraction efficiency is improved and a method of manufacturing the same are provided. The nitride-based semiconductor light emitting device comprises an n-clad layer, an active layer, and a p-clad layer, which are sequentially stacked on a substrate, wherein the n-clad layer comprises a first clad layer, a second clad layer, and a light extraction layer interposed between the first clad layer and the second clad layer and composed of an array of a plurality of nano-posts, the light extraction layer diffracting or/and scattering light generated in the active layer.

Abstract: A new high-performance, compact microgyroscope is implemented using a microlaser such as a microsphere laser or a microdisc laser that can be easily reduced in size. The microgyroscope includes a pumping unit for inputting pumping light for optical pumping, at least one microsphere or microdisc for oscillating a laser beam by performing optical pumping using light received from the pumping unit, an output coupler for receiving the oscillated laser beam from the microsphere or microdisc, and a photodetector for calculating a beat frequency due to interference between beams output from the output coupler to measure rotation. The pumping unit and the output coupler are constructed using a tapered optical fiber.

Abstract: A nanostructure without bulges and a method of fabricating the nanostructure are provided. The method includes forming a nanopattern on a surface of a polymer, allowing the surface of the polymer with the nanopattern to come into contact with a predetermined solvent, and applying an external stimulus to the surface of the polymer in contact with the solvent to remove bulges around the nanopattern formed during formation of the nanopattern. Accordingly, the bulges of the nanostructure where the nanopattern is formed may be removed at a low cost and in a simple manner.

Abstract: The present invention relates to a method for etching glass or metal using a negative photoresist and a method for fabricating a cliche using the same. In the method for etching glass or metal according to the present invention, since adhesion strength between the negative photoresist and the metal or the metal oxide is excellent, the photoresist layer is not corroded by the metal or metal oxide etching solution, it is unnecessary to produce an inverse photomask, the fabrication process is simple, and a low resolution light source such as mixed wavelength type light source is capable of being used, thus, economic efficiency is ensured.

Abstract: A portable terminal includes a main body, a display, a plurality of sensors and a plurality of light elements. The main body includes a wireless communication unit. The display is coupled to the main body and is configured to output visible information. The plurality of sensors is coupled to the body and located at a peripheral region surrounding the display. A corresponding at least one sensor of the sensors is configured to receive user input for controlling a function associated with the visible information. The plurality of light elements is configured to output visible light. Each of the light elements is associated with one of the sensors to output the visible light proximate to the associated sensor. The corresponding at least one sensor is determined by which of the plurality of sensors is configured to permit controlling of the function associated with the visible information.

Abstract: A method of printing fine patterns prints a fine pattern on a substrate using an elastic mold with an intaglio pattern. This method includes applying a fine pattern printing ink to a surface of a patterned elastic mold; removing the ink applied to an embossed portion of the elastic mold by closely adhering an ink removing unit having a polymer resin or an organic compound with a surface energy from <a surface energy of the ink?2 erg/cm2> to <the surface energy of the ink+erg/cm> to the surface of the elastic mold and then detaching the ink removing unit therefrom; and closely adhering the elastic mold to a substrate to transcribe the printing ink thereto. This method allows forming a fine pattern with good quality since the ink applied to the embossed portion of the elastic mold may be effectively removed during a gravure process.

Abstract: Provided are a biochip platform for biochemically analyzing a sample such as DNA or protein, including a dielectric particle layer, and an optical assay apparatus including the same. The biochip platform includes the dielectric particle layer uniformly formed on a substrate. The particle uniformity of the dielectric particle layer enables good wavelength separation of fluorescence signal, and the large surface area of the dielectric particle layer guarantees better amplifications efficiency of fluorescence signal. Furthermore, the biochip platform shows good economical efficiency due to easy fabrication process, and is particularly useful in an optical assay apparatus for analyzing a biochemical sample due to good assay efficiency.

Abstract: A method for forming a black matrix includes (S1) applying a black matrix-forming ink to an intaglio-patterned elastic mold; (S2) removing an ink applied to an embossed portion of the elastic mold; (S3) transcribing the ink remaining in an intagliated portion of the elastic mold to a substrate; and (S4) curing and drying the ink transcribed to the substrate. The step (S2) may be performed in a way of closely adhering a surface of an ink removing unit having a surface energy from <a surface energy of the ink?2 erg/cm2> to <the surface energy of the ink+8 erg/cm2> to the embossed portion of the elastic mold and then taking away the ink removing unit from the embossed portion. This method allows forming a black matrix in a simple and economic way by applying the gravure process.

Abstract: A high frequency heat treatment method for a fine bottom-closed hole includes preparing a coil so as to be completely inserted into the fine bottom-closed hole, preparing a core for controlling a magnetic flux within the coil such that the core protrudes from upper and lower sides of the coil, heat-treating a target part of the fine bottom-closed hole under conditions of a heating time of 2˜3 seconds, an output power of 200˜300 kW, a quenching time of 3˜5 seconds, a positive electrode voltage of 4 ˜8 kV, and a positive electrode current of 2.0˜4.5 A, and quenching the heat-treated part of the fine bottom-closed hole with cooling nozzles fixed around the heat-treated part such that a sufficient amount of cooling water is injected uniformly over the whole heated part with a sufficient pressure via the cooling nozzles.

Abstract: A folder type mobile telephone and control method therefor are provided which utilize an auxiliary display unit viewable whether the folder is opened or closed. The folder type mobile telephone includes an auxiliary display unit and a main body having a main display unit. The folder type mobile telephone includes an opening at a position corresponding to the auxiliary display unit. The folder type mobile telephone may include a wheel button formed at one side of the main body to input user commands to the auxiliary display unit. A transparent window may be formed at the opening to protect the auxiliary display unit. Regardless of whether the folder is opened or closed, a user can view, and control the auxiliary display unit via wheel button inputs. Since the auxiliary display unit is formed on the main body, the relative thickness of the folder can be reduced to make the folder type mobile telephone compact.

Abstract: A new high-performance, compact microgyroscope is implemented using a microlaser such as a microsphere laser or a microdisc laser that can be easily reduced in size. The microgyroscope includes a pumping unit for inputting pumping light for optical pumping, at least one microsphere or microdisc for oscillating a laser beam by performing optical pumping using light received from the pumping unit, an output coupler for receiving the oscillated laser beam from the microsphere or microdisc, and a photodetector for calculating a beat frequency due to interference between beams output from the output coupler to measure rotation. The pumping unit and the output coupler are constructed using a tapered optical fiber.