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Do Hyun Kim

Do Hyun Kim, Daegu KR

Patent application numberDescriptionPublished
20110077339WHITE FILM AND A METHOD OF MANUFACTURING OPAQUE WHITE FILM - Disclosed is a white film having low content of oligomer within the film.03-31-2011

Do Hyun Kim, Gyeonggi-Do KR

Patent application numberDescriptionPublished
20090026450THIN FILM TRANSISTOR SUBSTRATE AND METHOD OF MANUFACTURING THE SAME - A thin film transistor array substrate comprising a base substrate, a first wire on the base substrate, a first insulating layer on the base substrate to cover the first wire, a semiconductor layer on the first insulating layer, a second insulating layer on the first insulating layer on which the semiconductor layer is formed, and a second wire on the second insulating layer on the second insulating layer is provided, and a portion of the second wire makes contact with the semiconductor layer through the contact hole.01-29-2009
20100195233LUMINANCE-ENHANCED FILM - Disclosed is a luminance-enhanced film, including birefringent island-in-the-sea yarns, whose island portions are grouped, based on two or more spinning cores, present in a sheet. The luminance-enhanced film causes formation of an optical modulation interface between island portions and sea portions, thus maximizing optical modulation efficiency, as compared to conventional birefringent island-in-the-sea yarns. The birefringent island-in-the-sea yarns of the present invention are free of aggregation of island portions in the center thereof, although the number of island portions is 500 or more. As a result, the birefringent island-in-the-sea yarns maximize an optical modulation interface area, and thus considerably improve optical modulation efficiency, as compared to conventional birefringent island-in-the-sea yarns including one spinning core. Accordingly, the birefringent island-in-the-sea yarns advantageously exhibit considerably improved luminance, as compared to conventional birefringent island-in-the-sea yarns wherein birefringent fibers or one spinning core is present in a sheet.08-05-2010
20100195234LUMINANCE-ENHANCED FILM - Disclosed is a luminance-enhanced film, including birefringent island-in-the-sea yarns which comprise island portions and sea portions, each composed of a specific material. Accordingly, unlike conventional stack-type luminance-enhanced films, the luminance-enhanced film of the present invention comprises birefringent island-in-the-sea yarn, as a layer, in the sheet, thus considerably improving luminance without forming a plurality of layers. In addition, several hundred layers are not laminated on one film and the film can be easily fabricated at considerably reduced costs. Furthermore, the luminance-enhanced film has considerably more birefringent interfaces, as compared to films fabricated by conventional methods wherein birefringent fibers are incorporated into sheets, thus considerably improving luminance-enhancement effects and being industrially applicable.08-05-2010
20100196693OPTICAL-MODULATION OBJECT - Disclosed is an optical-modulation object, including birefringent island-in-the-sea yarns, whose island portions are grouped, based on two or more spinning cores, in a matrix. The optical-modulation object causes formation of an optical modulation interface between island portions and sea portions, thus maximizing optical modulation efficiency, as compared to conventional birefringent island-in-the-sea yarns.08-05-2010
20100205926SPINNERET FOR PREPARING ISLAND-IN-THE-SEA YARNS - Disclosed is a spinneret for preparing island-in-the-sea yarns, wherein island ingredient supply channels are partitioned into a plurality of groups in a discharge portion. The island-in-the-sea yarns prepared using the spinneret can prevent aggregation of island portions in the center thereof, although the number of island portions is 500 or more. Accordingly, island-in-the-sea yarns are considerably advantageous for the preparation of microfibers, since 500 or more island portions can be disposed in one island-in-the-sea yarn and fineness of island portions can thus be reduced. In addition, the island-in-the-sea yarns have an advantage of considerably reduced production costs, since 500 or more microfibers can be produced from one island-in-the-sea yarn. Furthermore, the island-in-the-sea yarns render a specific color according to the ratio of sea portions to island portions and diameter of fibers, without adding chromogenic compounds such as dyes, and are thus applicable to photochromic fibers.08-19-2010
20100264766Rotor and Vibration Motor - A rotor is provided. The rotor includes a bearing yoke, a supporting member, a rotor substrate, a coil, and a weight coupled to the supporting member. The supporting member is coupled to the bearing yoke. The rotor substrate is supported by the supporting member. The coil is supported by the supporting member and electrically connected to the rotor substrate. The weight is coupled to the supporting member.10-21-2010
20110014838LUMINANCE-ENHANCED FILM AND METHOD FOR FABRICATING THE SAME - Disclosed is a luminance-enhanced film. The luminance-enhanced film includes an intermediate layer comprising a birefringent island-in-the-sea yarn and a sheet laminated on both sides of the intermediate layer, wherein the interface between the intermediate layer and the sheet has an air-gap area ratio of 5% or less, and is characterized in that it is substantially free of curling and does not contain bubbles, thus exhibiting considerably superior optical efficiency and adhesion force. A liquid crystal display utilizing the luminance-enhanced film also advantageously exhibits considerably improved luminance.01-20-2011
20110157513LIQUID CRYSTAL DISPLAY DEVICE - Disclosed is a liquid crystal display device, provided with an optical-modulation film including a matrix and birefringent island-in-the-sea yarns having two or more spinning cores arranged in the matrix to considerably reduce production costs and remarkably increase luminance. The optical-modulation film includes birefringent island-in-the-sea yarns whose island portions are grouped based on two or more spinning cores, present in the matrix, thus causing formation of optical modulation interfaces between the island portions and sea portions, thus maximizing optical modulation efficiency, as compared to conventional birefringent fibers.06-30-2011

Patent applications by Do Hyun Kim, Gyeonggi-Do KR

Do Hyun Kim, Ansan-Si KR

Patent application numberDescriptionPublished
20100007229Vibration Motor - A vibration motor is provided. The vibration motor includes a case, a shaft, a rotor, a printed circuit board (PCB), and a coil. The case includes a lower case and an upper case. The case includes an insulating coating layer on the lower case thereof. The shaft is supported by the upper case and lower case. The rotor is rotatably coupled to the shaft to generate a vibration. The PCB is fixed to the lower case. The coil passes through the PCB and fixed to the lower case. the coil interacts with the rotor.01-14-2010

Do Hyun Kim, Gwangju KR

Patent application numberDescriptionPublished
20080308121Portable Die Cleaning Apparatus and Method Thereof - A portable die cleaning apparatus and method are provided The apparatus is capable of performing a plasma cleaning process for a surface of a die using plasma discharge generated in a reaction chamber that is defined on the die, without separating the die. The portable die cleaning apparatus includes a frame with an open lower face to define a reaction chamber facing the surface of the die between the surface of the die and the frame itself when the frame is seated on the die and an active electrode that is placed at a position opposite to the die in a state where the die is electrically grounded, and receives electric power from an external power supply to generate plasma in the reaction chamber.12-18-2008

Do Hyun Kim, Anyang KR

Patent application numberDescriptionPublished
20110215662TERMINAL ASSEMBLY FOR MOTOR OF HYBRID VEHICLE - The present invention features a terminal assembly for a motor of a hybrid vehicle as a wire connection structure of a concentrated winding motor, which can maintain a gap between a plurality of terminals using a clip and a holder in an insulated manner. Such a terminal assembly for a motor of a hybrid vehicle, includes: an open type holder with an open top; a plurality of terminals concentrically arranged and inserted into the holder; and a plurality of clips, each inserted between the terminals in an insulated manner to maintain a gap between the terminals.09-08-2011

Do Hyun Kim, Incheon-Si KR

Patent application numberDescriptionPublished
20120104617SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME - A semiconductor device and a method for manufacturing the same are disclosed. A dummy pattern is formed between a fuse pattern and a semiconductor substrate so as to prevent the semiconductor substrate from being damaged, and a buffer pattern is formed between the dummy pattern and the semiconductor substrate, so that a dummy metal pattern primarily absorbs or reflects laser energy transferred to the semiconductor substrate during the blowing of the fuse pattern, and the buffer pattern secondarily reduces stress generated between the dummy pattern and the semiconductor substrate, resulting in the prevention of a defect such as a crack.05-03-2012

Do Hyun Kim, Daejeon-Si KR

Patent application numberDescriptionPublished
20120122475METHOD AND APPARATUS FOR ESTIMATING POSITION OF ACCESS POINT IN WI-FI SYSTEM - A method and apparatus for estimating a position of an access point (AP) in a Wi-Fi system is provided. The method includes measuring a strength of a signal, transmitted by the AP, at three or more measurement points (MPs), selecting an imaginary attenuation factor, calculating a range between the AP and each of the MPs on the basis of the imaginary attenuation factor and a strength of a signal measured at the MP, calculating an intersecting point of ranging circles in each of which a position of the MP is a center and the range between the MP and the AP is a radius, calculating a best intersecting point from among a plurality of the intersecting points obtained by repeating the calculating the range and the calculating the intersecting point of ranging circles while changing the imaginary attenuation factor, and estimating the best intersecting point as the position of the AP.05-17-2012