baber/WOPTO huggingface dataset:
Patent KR-20030055953-A (KR)
Title: Hinge mounting structure of door for washing machine
Inventor: JE BYEONG SU
IPC: D06F39/14
Filed: 2001-12-27
Abstract: PURPOSE: Door hinge installation structure for a washing machine is provided to improve the appearance around a door by restricting exposure of the door hinge in opening and closing the door, and to assemble the door with the hinge conveniently by pressing the door in a top cover in inserting a hinge shaft of the hinge to a hinge hole of the top cover. CONSTITUTION: A placing surface(23) is formed in the edge of an inlet(22) of a top cover(20), and a door(30) is positioned on the placing surface. The placing surface is recessed, and a hinge hole(25) is perforated at the side of the inlet. A hinge shaft of a hinge(40) is inserted to the hinge hole, and an insertion body of the hinge is placed in a hinge placing groove(32) of the door. Plural fitting bosses are formed in the insertion body, and fitted to assembling slots(33) of the hinge placing groove. A cover plate is formed in the insertion body to cover the upper part of the hinge placing groove, and placed in a stepped part in fitting the insertion body to the hinge placing groove. Exposure of the hinge structure is prevented, and the hinge is combined with the door easily.
Patent KR-20030057758-A (KR)
Title: apparatus and method for selecting of audio input signal
Inventor: JIN SANG EON
IPC: H04N5/60
Filed: 2001-12-29
Abstract: PURPOSE: An apparatus and a method for selecting an audio input signal are provided to perform automatic conversion between a digital audio signal and an analog audio signal using an over-sampling clock signal inputted to a SPDIF(Sony Phillips digital interface) receiver. CONSTITUTION: An apparatus for selecting an audio input signal that receives an analog and/or digital audio signal from at least one external device includes an SPDIF receiver(201), an integrator(203), and a controller. The SPDIF receiver separates an actual audio signal and a plurality of clocks from a signal of an SPDIF input jack that receives the digital audio signal and the multiple clocks, and then outputs one of the clocks for the purpose of judging whether or not there is an input signal. The integrator temporarily stores the clock output from the SPDIF receiver and then integrates the clock. The controller selects the digital audio signal only when the output of the integrator is higher than a predetermined value and selects the analog audio signal in other cases.
Patent KR-20030059353-A (KR)
Inventor: YOON YEONG MOK
IPC: H04L12/66
Filed: 2001-12-29
Abstract: PURPOSE: A system and a method for processing voice data in a VOP(Voice Over Packet) gateway are provided to prevent a load generated in a CPU by separating a CPU and a DSP(Digital Signal Processor) and installing the CPU and the DSP in separate boards. CONSTITUTION: A DSP board(200) receives voice data, compresses and processes the received voice data, and converts the voice data into packet data. A CPU board(100) receives the packet data converted by the DSP board(200), provides the corresponding packet data to one slave CPU among a plurality of slave CPUs(12), converts the corresponding packet data to be suitable for a protocol format with a scheme for which a user wishes, and transmits the converted packet data to an Internet network.
Patent KR-20030059524-A (KR)
Title: Apparatus and method of sound signal output of mobile station
Inventor: HWANG SEON UNG
IPC: H04M1/60
Filed: 2001-12-29
Abstract: PURPOSE: An apparatus and a method for outputting a sound signal in a mobile communication terminal are provided to output the sound signal with high tone quality through speakers with a small aperture. CONSTITUTION: A sound signal reproducing device including a codec(210) and a ring-back tone generating unit(220) reproduces a sound signal. Two amplifiers(230-1,230-2) connect to the sound signal reproducing device, and amplify the sound signal inputted from the sound signal reproducing device. Speakers(110-1,110-2) connect to the amplifiers(230-1,230-2), respectively, and receive and output the amplified signals. A control unit(200) controls the sound signal reproducing device, the amplifiers(230-1,230-2), and the speakers(110-1,110-2).
Patent KR-20030058571-A (KR)
Title: A method for manufacturing a semiconductor device
Inventor: JU SEONG JAE
IPC: H01L21/20
Filed: 2001-12-31
Abstract: PURPOSE: A method for fabricating a semiconductor device is provided to enable high speed of the semiconductor device by increasing mobility of a material itself while applying compressive stress and tensile stress to a channel. CONSTITUTION: Silicon carbon or silicon germanium is grown on a silicon substrate to form a buffer layer through a selective epitaxial growth(SEG) process. An epi layer is formed on the buffer layer, having a thickness of 1-10 micrometer. The buffer layer is grown through an in-situation process using one selected from a group of boron, phosphor, arsenic and a composition thereof or grown without doping impurities. The epi layer is one selected from a group of a silicon epi layer, a silicon carbon epi layer and a silicon germanium epi layer.
Patent KR-20010074631-A (KR)
IPC: C12N15/86
Filed: 1999-07-01
Abstract: Use of a negative-sense RNA virus vector has enabled transfer of nucleic acid into nerve cells. The method of this invention can be used for introducing a gene efficiently into nerve cells including the central nerve tissue in gene therapy, etc.
Patent KR-20010074677-A (KR)
Title: 주형, 캡슐에 넣기 위한 장치 및 캡슐에 넣는 방법
IPC: H01L21/56
Filed: 1999-07-05
Abstract: 본 발명은, 서로에 대해 움직일 수 있고 적어도 하나는 리세스를 구비하고 있는 적어도 두 개의 주형 부분 및, 물질을 캡슐에 넣기 위한 이송 장치로 이루어진, 캐리어에 장착된 전자 성분을 캡슐에 넣기 위한 주형에 관련되는데, 적어도 하나의 주형 부분은 한쪽 면에서 주형 공동을 함께 한정하는 주형 부분의 벽에 연결하고 다른 쪽 면에서 주형 공동으로부터 떨어져 주형 부분의 측면에 연결하는 런너(runner)를 구비하고 있다.  본 발명은, 상기 주형이 일부를 형성하는 캡슐에 넣기 위한 장치 및, 캐리어에 장착된 전자 성분을 캡슐에 넣기 위한 방법에 관한 것이다.
Patent KR-20010053451-A (KR)
IPC: H01L21/304
Filed: 1999-07-08
Abstract: A polishing pad for polishing a semiconductor wafer which includes an open-celled, porous substrate having sintered particles of synthetic resin. The porous substrate is a uniform, continuous and tortuous interconnected network of capillary passage. The pad includes a bottom surface that is mechanically buffed to improve the adhesion of an adhesive to the pad bottom surface.
Patent KR-20010053593-A (KR)
Title: 자산 집중형 제조회사를 위한 컴퓨터로 구현된 가치 경영도구
IPC: G05B19/418
Filed: 1999-07-22
Abstract: 자산 집중형 제조회사의 자원들의 가치를 평가하는 방법이다.  계산의 결과들은 각 시간 범위의 각 자원에 대한 MAV를 제공한다.  계산을 위한 입력에는 자원으로 만들어지는 제품의 가격, 제품의 확률적인 수요, 다양한 제품에 의해 사용되는 자원의 사용량 및 자원의 유용성을 포함한다.  하나의 방정식이 각 자원과 연관된 일련의 방정식은 자원 가치를 나타내는 라그랑주 승수(lagrangian multiplier)를 갖는 라그랑주 방법을 이용하여 공식화되고 해가 구해진다.
Patent KR-20020010562-A (KR)
IPC: C23F1/04
Filed: 2000-05-30
Abstract: 화학적 기계가공(광화학적 기계가공, 화학적 레지스트 기계가공 또는 열적 레지스트 기계가공)과 전기 방전 기계가공의 조합은 고유한 엣칭 특성을 갖고 저렴한 비용으로 기계가공 효율을 증가시킨다. 상당한 깊이까지 기판을 신속하고 정확하게 기계가공하는 화학적 기계가공이 더 느리지만 고유한 고급 면 특성을 갖는 3차원 표면 패턴화를 제공하는 더욱 정확한 전기 방전 기계가공과 조합되어서 벽 또는 경사면의 평탄도가 증가된다. 이 공정은 a) 화학적 기계가공에 의해 최종 제품에 필요한 조직의 근사 깊이와 기본 패턴을 수득하고 후속 전기 방전 기계가공에 의해 패턴화된 표면의 홈, 벽 및 트로프를 정련하거나 b) 전기 방전 기계가공에 의해 트로프, 홈 및 벽의 패턴을 형성하고 화학적 기계가공에 의해 홈의 깊이를 연장시킴으로써 (초기 패턴의 고원지대 표면위에 레지스트를 써서)수행된다. 단계 b)의 초기 제품은 추가 전기방전 기계가공을 받아서 홈 특성을 정련시킬 수 있다.
Patent KR-20010072336-A (KR)
Title: 플라스틱 선별장치
IPC: B03C7/02
Filed: 2000-03-21
Abstract: 본 발명은 다른 종류의 분쇄된 플라스틱을 정전분리하여 종류별로 정확히 선별하는 장치이다. 플라스틱편을 크기별로 분류하는 분류부(40), 마찰대전장치(17), 한쌍의 드럼형 정전분리장치(41) 및 정전분리장치의 아래쪽에 배치된 회수부(26)로 구성된다. 각 회수부(26)를 칸막이하는 칸막이 벽(52~55)의 구조는 각 플라스틱편(16)의 극성·대전량에 따른 낙하위치에 따라서 수평이동할 수 있다. 이 때문에 고압전원장치(24)로부터의 전압 등을 변경하지 않고 분리를 정확히 행할 수 있다.
Patent KR-20010074934-A (KR)
IPC: B23C5/20
Filed: 1999-09-01
Abstract: Each of the intersection lines between the side  surface (18,19) and the top surface (16) of the cutting insert  forms a main cutting edge (24,25) respectively. Protruding ends  (22,23) respectively intended to plane out the machined surface.  The main cutting edges and bevel faces are separated in each  corner of smoothly rounded corner edges (28,29) respectively. The indexable cutting insert (13)  formed as a parallelogram includes two essential parallel  rectangular side faces, the top surface (16) and bottom surface  (17) which are be mutually angled away from each other. Top and  bottom faces extend two longitudinal side surfaces (18,19) and  two end faces (20,21) perpendicularly oriented from top and  bottom faces. The side surfaces are generally inclined from top  face and from bottom face. The endfaces located in diametrically  opposite corners are provided on protruding ends (22,23).
Patent KR-20010075586-A (KR)
IPC: H05K3/38
Filed: 1999-09-28
Abstract: 유연성 막 회로들의 제조 및/또는 설계에 이용하기 위한 전기적으로 기능적인 접착성 트랜스퍼가 개시된다. 폴리에스테르 필름 기판 위에 바로 프린트되는 대신에, 전기적인 회로 소자들(11, 12)이 캐리어 시트(15) 위에 프린트된다. 압력 감지 접착층(13)이 캐리어 시트(15) 상의 프린트된 회로 패턴(11, 12)의 노출된 표면들에 적용되며 릴리스 페이퍼(14)에 의해 덮여진다. 회로는 이후 릴리스 페이퍼(14)를 벗겨내고 압력 감지 접착층(13)에 의해 상기 회로를 장착함으로써 모든 바람직한 기판(44)에 적용된다. 캐리어 시트(15)는 전형적으로 회로가 기판(44)에 접착적으로 결합된 후에 벗겨진다. 캐리어 시트(15)는 바람직하게는, 회로 패턴과 이 회로 패턴이 결합되는 기판과의 가시적인 정렬이 용이하도록 투명 또는 반투명하다.
Patent KR-20010082294-A (KR)
Title: Surface-modified Manganese Sulfide, Method for Producing the same and Use thereof
IPC: C09C1/00
Filed: 2000-09-04
Abstract: The invention relates to surface-modified manganese sulfide which is obtained by providing manganese sulfide in powder form, adding 0.01 to 10 wt. % of a coating agent in relation to the weight of the manganese sulfide used and mixing the mixture for a long enough period to ensure that said mixture is homogeneous.
Patent KR-20010101060-A (KR)
Title: Valve for controlling liquids
IPC: F02M51/00
Filed: 2000-09-14
Abstract: A valve for controlling fluids is embodied with a piezoelectric actuator (3) for actuating a valve member (2) that on one end has a valve head (7), forming a valve closing member, that cooperates with a seat (8) provided on the valve body (6) for opening and closing the valve (1). On a side of the piezoelectric actuator (3) remote from the valve member (2), a hydraulic chamber (21) is provided, which communicates, via at least one hydraulic line (23), with a bore (5) of the valve member (2) that is sealed from the piezoelectric actuator (3), and into which bore a piston (20) connected to the piezoelectric actuator (3) can plunge; the hydraulic chamber (21) is embodied as a hydraulic spring, which with its spring force on the piston (20) connected to the piezoelectric actuator (3) act as the prestressing element and the tolerance compensating element. The valve is intended in particular as a component of a fuel injection valve.
Patent KR-20010101495-A (KR)
Title: 짧은 범위, 저 전력 통신 시스템 및 그 시스템을 동작하는방법
IPC: H04W48/14
Filed: 2000-10-23
Abstract: 짧은 범위, 저 전력 통신 시스템은 ISM 밴드로 통신할 수 있는 복수의 송수신 기지국들(RCM 1 내지 RCM 4)을 포함하고, 여기서 데이터 패킷을 송신하고자 하는 기지국은 적어도 하나의 지리학적 지역 및/또는 복수의 국가들에  공통인 스펙트럼 할당(allocation)에서 낮은 비트 레이트(bit rate)의 직접 시퀀스 확산 스펙트럼(direct sequence spread spectrum; DSSS) 신호로서 데이터 패킷을 송신한다. 캐리어 감지 다중 액세스(carrier sense multiple access; CSMA) 프로토콜은 기지국들이 상기 스펙트럼 할당을 액세스할 수 있도록 사용될 수 있다.
Patent KR-20010101884-A (KR)
Title: Method for power level control of a display device and apparatus for carrying out the method
IPC: G09G3/288
Filed: 2000-01-20
Abstract: Plasma Display Panels (PDP) are becoming more and more interesting for TV technology. One important criterion for picture quality is the Peak White Enhancement Factor PWEF. This invention proposes a method for power level control in a display with which the PWEF can be increased and which is characterised by: the provision of a set of power level modes for the sub-field coding, wherein to each power level mode a characteristic sub-field organisation belongs, the sub-field organisations being variable in respect to one or more of the following characteristics:     the number of sub-fields   the sub-field type   the sub-field positioning   the sub-field weight   the sub-field pre-scaling a factor for the sub-field weights which is used to vary the amount of small pulses generated during each sub-field; and wherein the method comprises the steps of determining a value (AP) which is characteristic for the power level of a video picture and selecting a corresponding power level mode for sub-field coding. The invention further comprises an apparatus for carrying out the method for power level control. <IMAGE>
Patent KR-20010110658-A (KR)
Title: Clamping circuit and method for synchronous rectification
IPC: H02M3/335
Filed: 2000-03-10
Abstract: A rectifier circuit having voltage clamping circuitry is disclosed. The rectifier circuit includes a transformer having a primary winding and a secondary winding and transistor switches each being connected to an end of the secondary winding of the transformer. The rectifier circuit further includes a first diode having an anode terminal connected to a first end of the secondary winding and a second diode having an anode terminal connected to a second end of the secondary winding. The cathode terminals of the first and second diodes are coupled to a capacitor. The energy stemming from voltage spikes and/or high frequency ringing appearing at the transistor switches due to parasitic effects is effectively absorbed by the first and second diodes and collected in the capacitor. The collected energy is recycled to control the operation of the transistor switches.
Patent KR-20020010139-A (KR)
IPC: B01J20/20
Filed: 2001-02-26
Abstract: 흡착 효율이 높고 저가로 제조 가능한 흡착체를 제공한다. 물 속에서 주로 활성탄 분말을 분산시켜서 되는 페이스트를 준비하고, 그 페이스트에 의해 성형체를 성형한다. 그 성형체로부터 물을 제거함으로써, 주로 활성탄 분말이 결합되는 것에 의해 셀을 갖고 형성된 흡착체를 얻는다. 페이스트는 성형체를 수축 가능함과 동시에, 소실에 의해 셀의 표면적을 증가시키는 한천성분을 포함한다.
Patent KR-20020026173-A (KR)
IPC: C09D11/18
Filed: 2001-04-03
Abstract: a) 착색제, b) 아래 화학구조식 (1)을 가진 용제 한 종류 또는 두 종류 이상을 주용제로서 함유하는 용제 (식 중, R 1 , R 2 및 R 3 는 각각 독립적으로 H 또는 CH 3 를 나타낸다.), 및 c) 상기 용제에 용해 가능한 수지를 포함하며, 잉크 점도가 25 ℃에서 700-8000 mPaㆍ s인 유성 볼펜 잉크 조성물. 하나의 태양에 의하면, 주용제는 상기 용제를 포함하는 용제 및 프로필렌글리콜 모노메틸 에테르의 혼합 용제이다.
Patent KR-20030060238-A (KR)
Inventor: CHOI CHANG JUN
IPC: A63B24/00
Filed: 2002-01-07
Abstract: PURPOSE: Provided is a system for running exercise to control the running momentum systematically for each user. The runner is provided with various running courses by a monitor display to simulate the actual running situation. CONSTITUTION: The system comprises: a board part(10) in which are present a mat with a certain size, placed on the ground, a switch inside a mat to input the signal to a control part which is on/off by the movement of feet when treading; a control part(20) which handles the running exercise program and the whole system including data recording part for users running record, various displays, runner's cyber character, and main controller which has running exercise program and outputs proper data according to the signals from board part; and a display part(30) which displays real time graphic pictures by the output signals of movement of the cyber characters, back ground graphic picture for games, running distance, and records.
Patent KR-20030060244-A (KR)
Inventor: HONG SUN GUK
IPC: B29C45/77
Filed: 2002-01-07
Abstract: PURPOSE: A pressure control mold having a variable cavity is provided to prevent bubbles from rising by supplying gas to a cavity before the bubbles rise, and to raise foam ratio by expanding the cavity the moment the bubbles rise. CONSTITUTION: A cavity(52) is formed at fixed molds(54,56), and is filled with melted polymeric materials. Variable molds(58,60) are movably installed at the fixed molds, and moves the cavity forward and backward. A driving unit moves the variable molds. A gas supply unit(66) supplies gas to the cavity. A gas discharge unit(70) discharges the gas in the cavity.
Patent KR-20030060320-A (KR)
Inventor: HAN CHEOL HO
IPC: C22C38/40
Filed: 2002-01-08
Abstract: PURPOSE: A wear resisting steel suitable for use as tooth of heavy equipment and chisel of breaker, and a method for manufacturing the same are provided. CONSTITUTION: The wear resisting steel comprises C 0.20 to 0.35 wt.%, Si 0.50 to 1.50 wt.%, Mn 0.30 to 1.60 wt.%, Ni 0.40 to 1.00 wt.%, Cr 1.00 to 2.50 wt.%, Mo 0.10 to 0.80 wt.%, Al 0.01 to 0.04 wt.%, 0.020 wt.% or less of P, 0.010 wt.% or less of S, N 30 to 100 ppm, 25 ppm or less of O, at least one element selected from Ti 0.01 to 0.10 wt.% and V 0.05 to 0.15 wt.%, a balance of Fe and incidental impurities. The method includes the steps of hot forging the steel melt at 1100±150°C; annealing iron article obtained at a first step at 850±60°C; quenching the iron article at 850±60°C; and tempering the quenched steel article at 150 to 650°C.
Patent KR-20030061132-A (KR)
Title: Method for processing a orifice Hole on the orifice for Gas Absorption Chiller and Heater
Inventor: CHOI BYEONG GWON
IPC: B23P23/00
Filed: 2002-01-10
Abstract: PURPOSE: A method for processing an orifice hole for a gas absorption-type cooling and heating machine is provided to expand the diameter of the orifice hole to a desired dimension and improve the inner hardness of the hole by forcibly inserting and passing a steel ball through the orifice hole which is pre-processed by a high-speed drilling and to manufacture high-accuracy and smooth-surfaced orifice holes. CONSTITUTION: A method for processing an orifice hole for a gas absorption-type cooling and heating machine is composed of steps of forming a hole(31) of which a predetermined diameter(D') is smaller than a desired diameter(D) by a high-speed drilling in a longitudinal direction of an orifice(30), forcibly inserting a steel ball(33), which has a high surface-accuracy and is an identical dimension with the desired diameter, into the hole, and passing the steel ball through the hole and expanding the diameter of the hole into the desired diameter by making the steel ball pressurize an inside(32) of the hole.
Patent KR-20020013599-A (KR)
Title: Smart Card with High Speed Input/Output Module
Inventor: CHOI GYU WON
IPC: G06K19/07
Filed: 2002-01-14
Abstract: PURPOSE: A smart card including high-speed I/O module is provided to process the high capacity data at high speed and to access the system easily. CONSTITUTION: A CPU(100) operates a smart card system. A RAM(400) is used by the CPU and COS(Chip Operating System). A ROM(300) mounts an OS and COS. An EEPROM(Electrical Erasable Programmable Read Only Memory)(200) stores a variety of application programs and data. An asynchronous low-speed I/O module(500) enables the data communication. A high-speed I/O module(600) enables the data communication at high speed contrast to the asynchronous way. An I/O level detector(700) drives the low or high speed I/O module by sensing the use of a contact for the high speed communication.
Patent KR-20030063911-A (KR)
Title: A Screen Display Device
Inventor: NA GEON SU
IPC: H01J31/08
Filed: 2002-01-24
Abstract: PURPOSE: An image display device is provided to obtain the device with a reduced size and light weight, while allowing for ease of assembly and reduction of manufacturing costs. CONSTITUTION: An image display device(1) comprises an electron source(20) for emitting electrons in a vacuum container constituted by a front container(11) and a rear container(12); and an electron control unit(30) for controlling the electron beam generated from the electron source. The electron control unit includes barrier ribs(31) made of a non-metallic material and tightly deposited into three or more layers between the front container and the rear container. The electron control unit has a route for permitting the electron beam generated from the electron source to reach a screen(40) formed at the front container. The electron source and the electron control unit are arranged orthogonally with each other.
Patent KR-20020029876-A (KR)
Inventor: CHA JAE GWANG
IPC: H03H3/06
Filed: 2002-02-07
Abstract: PURPOSE: An automatic base insertion apparatus for manufacturing a crystal oscillator is provided to automatically insert a base into a turret in a status which is horizontally installed. CONSTITUTION: The automatic base insertion apparatus inserts a base(1) into a mounting groove(2a). A blank is assembled at the base(1). The blank is arranged on a pallet(10). A base conveyor(11) supplies at least one base(1) absorbed by a pallet(10) to a front end of a conveying rail(12). A circular turret(2) is horizontally installed at a rear end of the conveying rail(12) and is rotated one pitch by one pitch. A motor provides a rotary force to the turret(2). An insertion unit(14) is installed between the conveying rail(12) and the turret(2). The insertion unit(14) inserts the base(1) conveyed an exit of the conveying rail(12) into the mounting groove(2a).
Patent KR-20030069405-A (KR)
Title: The shielding structure for epoxy insulator
Inventor: CHOI SU GEOL
IPC: H01B17/50
Filed: 2002-02-20
Abstract: PURPOSE: An external shielding structure is provided to prevent a needle electrode from being generated at a gap at an interface between an epoxy resin insulator and an external shielding layer. CONSTITUTION: An external shielding structure includes an insulation paint layer(2) of a constant thickness and a conduction paint layer(3) of a constant thickness. The insulation paint layer(2) of a constant thickness is formed on an outer surface of an epoxy resin insulator(1), and the conduction paint layer(3) of a constant thickness is formed on a surface of the insulation paint layer(2) of a constant thickness.
Patent KR-20030069407-A (KR)
Title: Method of manufacturing a heterojunction CMOS transistor in a semiconductor device
Inventor: KANG JIN YEONG
IPC: H01L29/737
Filed: 2002-02-20
Abstract: PURPOSE: A method for fabricating a complementary metal oxide semiconductor(CMOS) transistor of a semiconductor device having a heterojunction structure is provided to use a conventional setup for fabricating a CMOS transistor by forming PMOS and NMOS transistors with a heterojunction structure composed of SiGe and Si on the same substrate. CONSTITUTION: The first SiGe layer(22) is formed on a silicon substrate(21). A p-well(23a), an n-well(23b) and an isolation layer(24) are formed in the first SiGe layer. The second SiGe layer(26) is formed on the n-well. A silicon layer(27) is formed on the second SiGe layer and the p-well. A predetermined thickness of the upper portion of the silicon layer is oxidized to form a gate oxide layer through a thermal oxidation process. A gate electrode(29), a gate spacer(31), a source/drain(30) and a silicide layer(32) are formed on the n-well and the p-well.
Patent KR-20030072790-A (KR)
Title: Preparation method of purified 2,6-naphthalene dicarboxylic acid
Inventor: CHO IN SIK
IPC: C07C63/38
Filed: 2002-03-06
Abstract: PURPOSE: Provided is a method for preparing 2,6-naphthalene dicarboxylic acid(NDA) with a high purity in a high yield by purifying a crude 2,6-NDA obtained by the oxidation of 2,6-dimethyl naphthalene. CONSTITUTION: The method for preparing 2,6-naphthalene dicarboxylic acid with a high purity comprises the step of oxidation of 2,6-dimethyl naphthalene in a liquid phase or the step of purifying a crude product obtained by the liquid phase oxidation reaction. The method is characterized in that an organic alcohol is used in the amount of 1 to 20 times of the amount of 2,6-naphthalene dicarboxylic acid. The impurities including trimellitic acid, metal complexes and high molecular weight materials can be removed by the addition of an amine or an amine compound wherein the undissolved components are removed by passing through a solid material and an amine salt dissolved in water or an organic alcohol is recovered in the form of NDA by distillation. The impurities such as formyl 2-naphthoic acid can be removed by hydrogenation in the presence of a metal catalyst under high pressure.