baber/WOPTO huggingface dataset:
Patent KR-20000043439-A (KR)
Title: System for continuously obtaining surface image of roll during roll in cramped space
Inventor: LEE JONG HAK
IPC: B21B38/00
Filed: 1998-12-29
Abstract: PURPOSE: A system is provide to obtain continuous image corresponding to one time rolling of a roll by synchronizing by calculating the amount of image obtaining range of one time of a camera with a generated code. CONSTITUTION: Continuous image of one time rolling of a roll is displayed by a worker by detecting a portion out of a standard state of a roll or decolorization or alien substances by using an image processing method or stored in a data storage unit(12). The rolling degree of the roll is sensed and transmitted to a personal computer(9) from an incremental encoder(13) generating the rolling degree as pulses as an electrical signal. The personal computer transmits a driving signal to an optical resource(7) and a CCD(charge coupled device) semiconductor device(5) via a synchronized pulse generating circuit(8) by calculating roll area corresponding to one time image obtaining and obtains image of a roll continuously. To keep uniform distance between the roll and a sensor head(1), the output signal of the sensor is processed in the personal computer and transmitted as a driving signal for a motor(10).
Patent KR-20000043771-A (KR)
Title: Method for measuring depth of burning section of shaft furnace
Inventor: KIM SUNG MAN
IPC: G01B7/02
Filed: 1998-12-29
Abstract: PURPOSE: A method for measuring a depth of a burning section of a blast furnace is provided to simply and economically measure a depth of a burning section according to the change of manufacturing condition without causing any troubles such as incomplete separation of slag and coke or mixing of the slag and molten pig iron in the coke. CONSTITUTION: A method for measuring a depth of a burning section of a blast furnace includes the steps of extracting sediment in a burning section by using a coke sampler, picking molten pig iron from the extracted sediment, analyzing content of carbon contained in the picked molten pig iron, and checking a depth representing a maximum value of the content of the carbon in the molten pig iron to determine a point where the content of the carbon in the molten pig iron as the depth of the burning section.
Patent KR-20000044278-A (KR)
Title: Method for incoming/transmission in cellular telephone under lock
Inventor: JEON SEON A
IPC: H04B1/38
Filed: 1998-12-30
Abstract: PURPOSE: A method for incoming/transmission in a cellular telephone under lock is provided that a non-subscriber prevents using incoming/transmission. CONSTITUTION: A method for incoming/transmission in a cellular telephone under lock comprises the steps of: detecting a network by initializing a module card for confirming a subscriber, when power is on; checking whether the lock is set; displaying the lock's setting state and then standing by, if set; unlocking the lock for a while, if two secret numbers equal, by checking whether a stored secret number equals to an inputted secret number, after asking to input the secret number, if the incoming is sensed during standing by; and returning to the second step by setting the lock again, after calling under the temporary unlock.
Patent KR-19990066900-A (KR)
Title: 광학식 픽업의 엑츄에이터 장치
IPC: G11B7/09
Filed: 1998-12-30
Abstract: 가동부를 트래킹 방향으로 구동시켰을 때의 회전 운동을 방지하여 정상적인 트래킹 서보를 실현하는 것을 과제로 한다. 
     대물렌즈 (2) 를 지지하는 렌즈홀더 (1) 에 요오크 (3) 를 부착하고, 이 요오크 (3) 의 상호 대향되는 내벽면 (3a, 3b) 의 일방의 내벽면 (3a) 에 영구자석 (5) 을 고착시킴과 동시에, 영구자석 (5) 의 양측 단면을 덮듯이 보조 요오크 (12) 를 형성한다.     베이스 (7) 상에 대물렌즈 (2) 의 광축과 직교하는 방향으로 감긴 포커스 코일 (9) 을 부착하고, 이 포커스 코일 (9) 의 일부에 상호 역방향으로 감긴 한쌍의 트래킹 코일 (10, 11) 을 접착시키고, 양 트래킹 코일 (10, 11) 을 포커스 코일 (9) 과 직교하는 방향으로 병설한다.     이들 포커스 코일 (9) 및 양 트래킹 코일 (10, 11) 의 접합부분을 영구자석 (5) 과 이것과 대향되는 요오크 (3) 의 내벽면 (3b) 간의 갭 내에 삽입하고, 양 트래킹 코일 (10, 11) 로 흐르는 전류에 의하여 렌즈홀더 (1) 를 대물렌즈 (2) 의 트래킹 방향으로 구동시킬 때, 양 트래킹 코일 (10, 11) 을 사이에 둔 양측에 있어서의 자속밀도를 보조 요오크 (12) 에 의하여 균일화함으로써, 회전 모멘트의 발생을 억제하여 정상적인 트래킹 서보가 이루어지도록 한다.
Patent KR-19990066948-A (KR)
Title: 유체도관 시스템 누출 검사장치 및 방법
IPC: G01M3/26
Filed: 1996-10-17
Abstract: 본 발명에 의한 장치(20)는 예를 들면 누출이 있는 것으로 의심되는 가정용 연료 가스 시스템의 고립된 부분에 연결된다.  본 장치는 기록된 시간 동안 실제 가스 누출결과에 의한 시스템내 압력강하를 결정하고, 계속해서 실제 누출뿐만 아니라 본 장치에 의해 제공되는 인위적인 보정된 오리피스를 통한 누출의 결과로 인한 시스템내 압력강하를 결정한다.  데이터는 본 장치에 의해 시스템으로부터의 실제 누출속도를 결정하기 위해 사용된 방정식에 사용된다.  본 방법은 압력강하 측정기 사이에서 시스템을 재가압할 필요를 없게 하거나 또는 검사되는 부피를 알아야 하거나 가정할 필요를 없게 한다.
Patent KR-19990081827-A (KR)
Title: 모터 제어 장치 및 그 모터 제어 장치를 포함하는정보 기록 및정보 재생 장치
IPC: H02P6/06
Filed: 1997-10-20
Abstract: 본 발명은 회전자(15) 및 3개의 권선(11, 12, 13)을 구비한 전기 3-상 무브러시 직류 모터(10)를 제어하기에 적당하게 되어 있는 모터 제어 장치에 관한 것이다. 모터 제어 장치는 권선에서 발생된 역기전력 전압에 기초한 정류 신호(21)를 발생하기에 적당하게 되어 있는 검출 유닛(20)을 포함한다. 모터 제어 장치는 전원의 접속을 위한 제 1 및 제 2 단자(31 및 32), 권선(11, 12 및 13)의 접속을 위한 출력부(33, 34, 35), 정류 신호(21)에 따라 단자(31, 32)를 출력부(33, 34, 35)에 선택적으로 결합하기 위한 다수의 제어 가능한 반도체 소자(36)를 더 포함한다. 모터 제어 장치는 센서 신호와 기준 신호 사이의 위상을 나타내는 위상-에러 신호를 발생하는데 적당하게 되어 있는 위상 검출기(40)를 더 포함한다. 출력 스테이지(30)는 권선(11, 12 및 13)을 통해 흐르는 양방향 전류(I)를 출력부(33, 34, 35)로 공급하는데 적당하게 되어 있는 제어 가능한 전원 스테이지(50)와 직렬로 배열되어 있다. 전류(I)는 위상-에러 신호(43)에 따라 제어되어, 제어된 방식으로 회전자(15)를 구동시키거나 그 회전자(15)의 동작을 중지시킨다.
Patent KR-20000022123-A (KR)
Title: Reduction and control valve
Inventor: HOERMANN WERNER
IPC: F16K17/04
Filed: 1997-09-24
Abstract: PURPOSE: A single combined hydraulic valve having the functions of a control valve and a pressure-reducing valve is provided. CONSTITUTION: A combined hydraulic valve(1) encompasses a valve casing(2) with a first central pressure connection(P), a second central pressure connection(Br) and a movable flow check piston(7) in the valve casing(2). The flow check piston(7) presents a pressure surface(16) enabling it(P), when the first central connection is put under supply pressure(Pp), to move from its basic position against an opposing force proportional to the supply pressure (Pp). The valve(1) has a first control ridge(40) used to link the connection(P) to the connection(Br), starting from a first set minimum displacement of the flow check piston(7) which corresponds to a lower threshold value(P1) of the supply pressure(Pp). Also the valve(1) has a second control ridge (41) used to break the linkage of the connection(P) with both the connection(Br) and the pressure surface(16), starting from a set maximum displacement(7) which corresponds to a higher threshold value(P2) of the supply pressure(Pp).
Patent KR-19990045789-A (KR)
Filed: 1999-01-11
Abstract: 본 발명은 수문에 관한 것이다. 
     종래의 수문은 단순히 수압에 의하여 열리고 닫히는 수문이 있었으나 완전히 개문되는 수문은 없었던 것이 현실이다. 
     이러한 결점을 해소하기 위하여 본발명의 수문은 유압 또는 공압 피스톤을 수문의 싸이드에 구성시켜주어 수문이 완전 일자 형태로  100% 개문시켜 줄수가 있도록 구성시킨 수문인 것이다. 수문의 작동이 필요하면 이동식 발전기 또는 전기의 힘을 이용하여 개폐 시킬수가 있을 뿐만 아니라 최악의 조건하에서는 인위적인 조절에 의해서 개문시킬수가 있도록 된 수문인 것이다. 고무댐이나 기계식수문의 경우 수문의 상단부로 유입수를 배출시켜주는 방식이다 보니 하천바닦은 항상 썩고 있기 때문에 녹조 현상이나 적조 현상에 의하여 광합성작용을 더욱더 활발히 하기때문에 저장된 물이 더욱더 썩고 있는 것이 현실 것이다. 
     본발명의 수문은 하단부로 유입수를 배출시켜수는 방식이다  보니 녹조 현상이나 적조 현상과 같은 광합성 작용이 발생하지 않기 때문에 수질이 오히려 개선되는 구조의 수문인 것이다. 
     또한 수문의 하단부에 구성된 응급 구조용 끈의 역할에 의하여 사람이 수문의 하단부로 유입되었을시에 응급 구조용 끈을 잡고서 탈출할 수가 있도록된 수문의 개폐장치이다.
Patent KR-20000051135-A (KR)
Inventor: JEONG JONG SEONG
IPC: B41J19/18
Filed: 1999-01-19
Abstract: PURPOSE: A controller is provided to reduce carriage deformation by making an encoder control the position of a carriage without length of entire transferring section of the carriage. CONSTITUTION: A controller operates moving degree of an encoder plate(30) based on a rotating amount of the encoder plate which is a pulse signal. Based on the moving degree, the controller controls the transferring distance of a carriage(3) which is the transferring distance of a timing belt(7). Thus, the encoder plate integrally rotates with a rotating shaft(4a) of a driving motor(4) so the encoder is unnecessary to be installed over the entire section. The encoder is not deformed by surrounding temperature and the encoder reduces errors with the small number of black bars(31).
Patent KR-20000051222-A (KR)
Inventor: SHIN DONG JIN
IPC: B60N2/02
Filed: 1999-01-19
Abstract: PURPOSE: An apparatus for converting seat direction and a vehicle seat adopting such apparatus are provided to achieve an enhanced ride comfort while allowing riders to conveniently convert horizontal direction of vehicle seat. CONSTITUTION: An apparatus for converting direction of seat having a seat cushion and a seatback, the apparatus comprising a guide unit(12) fixed onto a bottom surface of a vehicle, a moving unit(14) mounted to the guide unit(12) and which is selectively fixed to a predetermined portion of the guide unit(12) or moved according to the guide unit(12), and a supporting unit(16) which is selectively circulated centering a portion coupled to an end of the moving unit(14), the supporting unit(16) supporting the seat back in such a manner that the seat back selectively rotates.
Patent KR-19990068199-A (KR)
Title: 프레임 형상의 몰드부를 갖는 반도체 장치용 패키지 및 그 제조 방법
IPC: H01L23/055
Filed: 1999-01-29
Abstract: 본 발명은 제조가 용이하고 또한 기밀성도 우수한  반도체 장치용 패키지 및 그 효과적인 제조 방법을 얻는 것을 목적으로 한다.  반도체 장치용 패키지는 수지 기체(35)의 한쪽 면에 배선 패턴(37) 및 칩 몰드부(36)가 형성되는 동시에,  상기 배선 패턴(37) 및 칩 탑재부(36)를 둘러싼 금속으로 된 프레임 형상 패턴(38)이 형성되고,  수지 기체(35)의 다른 쪽 면에 배선 패턴(37)과 전기적으로 접속하는 복수의 단자(41)가 형성된 배선 기판(32)과,  상기 배선 기판(32)의 프레임 형상 패턴(38) 상에 몰드 성형된 열경화성 수지로 된 프레임 형상의 몰드부(45)를 구비한다.
Patent KR-20000054963-A (KR)
Inventor: PARK SANG KON
IPC: G01R31/28
Filed: 1999-02-02
Abstract: PURPOSE: A device and method for PCB detection is provided to precisely discriminate the contact of each connection point of a test pin. CONSTITUTION: A device and method for PCB detection includes followings. A fixture(7) has multiple test pins(9) which electrically contact each connection point of the PCB to be tested. A magnetic field generator(13) aligned to the opposite side of the fixture generates magnetic field on the PCB. A voltage instrument(21) measures voltage induced to the test pins(9) by the magnetic field. An error detector(23) detects errors from the measurement of the voltage instrument(21) by comparing the measurement of the test pins(9) and reference value. A controller controls a display(27) to display the result.
Patent KR-20000055299-A (KR)
Inventor: PARK EOK BYEONG
IPC: G02F1/1335
Filed: 1999-02-05
Abstract: PURPOSE: A backlight system for a liquid crystal display device is provided to reduce the number of components of the backlight system in order to increase the yield of the manufacturing process. CONSTITUTION: A backlight system for a liquid crystal display device includes a light source(20), an optical waveguide plate(30), a reflection plate(28), a dispersing/focusing plate(40), and a focusing plate(50). The light source(20) includes an optical source and a reflection roof. The optical waveguide plate(30) converts the light from the light source into a light from a plane source. The reflection plate(28) is implemented under the optical waveguide plate(30). The dispersing/focusing plate(40) is implemented on the optical waveguide plate(30). The focusing plate(50) is implemented on the dispersing/focusing plate. The lower surface of the optical waveguide plate is made to be flat while the upper surface of the optical waveguide plate is made by arranging fine lenses in a predetermined pattern.
Patent KR-19990077592-A (KR)
Title: 비가역회로장치
IPC: H01P1/387
Filed: 1999-03-04
Abstract: 본 발명은 통과대역 외부에서 감쇠량을 증가시켜 불필요한 방사방출 (radiation emission)의 발생을 대폭 저하시킴으로써, 소형화 및 가격 저하를 이룰 수 있는 비가역 회로 장치를 제공한다. 본 발명의 비가역 회로 장치는, 요크(yoke) 내에 배설된 영구자석으로 구성된 자기회로; 자기회로 내에 배설되며, 자성체에서 상호 교차하도록 배치된 복수개의 중심도체를 가지고 있는 자성 조립체; 각 중심도체의 포트와 접지와의 사이에 각각 접속되어 있는 복수개의 정합 커패시터; 자성 조립체 및 정합 커패시터를 수납하고 아울러 입출력 단자 및 접지단자를 가지고 있는 수지 케이스; 수지 케이스 내에서 적어도 자성 조립체 및 정합 커패시터를 안정하게 지지하는 스페이서(spacer)를 포함하고 있다. 스페이서는 필터 인덕터 및 필터 커패시터를 포함하고 있고; 필터 인덕터는 한 중심도체의 포트와 이 포트에 대응하는 입출력 단자와의 사이에 접속되어 있으며; 필터 커패시터는 입출력 단자와 접지와의 사이에 접속되어 있다. 이 때문에, 필터 인덕터, 필터 커패시터 및 정합 커패시터에 의해 저역필터가 형성된다.
Patent KR-20000059532-A (KR)
Inventor: KIM DONG SIK
IPC: F04D27/00
Filed: 1999-03-04
Abstract: PURPOSE: A controller of operation of a ventilation fan is provided to maintain a uniform temperature by automatically controlling a velocity of the ventilation fan according to temperature and automatically detect and determine abnormal operation by a microprocessor for preventing accidents in advance. CONSTITUTION: A controller of operation of a ventilation fan includes a DC motor(1) of which rotation velocity varies in proportion to the power supply voltage by using a permanent magnet, a thermistor(2) for changing the voltage according to temperature, a ventilation fan velocity control part(3) for selecting modes with jumper pin(6) according to a plurality of change values stored in a microcomputer, an A/D converter for converting the voltage detected by the thermistor to digital values to input to the microcomputer, an alarm control part(8) for controlling LEDSs(9), a speaker(10), an error-in lamp(11), and an error-out lamp(12) to represent normal or abnormal temperatures by analyzing the input data from the A/D converter.
Patent KR-20000060048-A (KR)
Inventor: KIM SANG GYUN
IPC: H01J29/48
Filed: 1999-03-11
Abstract: PURPOSE: An electron gun is provided to improve an inner voltage characteristic between a final acceleration electrode and a final focus electrode, and to reduce an aging time. CONSTITUTION: An electron gun comprises a cathode(51), a control electrode(52), a screen electrode(53), focus electrodes(54,55), and a final acceleration electrode(56). The focus electrodes(54,55) form an auxiliary lens, and the final acceleration electrode(56) is installed adjacent to the focus electrode(55) (referred to as a final focus electrode) which is the longer of the focus electrodes(54,55) from the cathode(51). The final focus electrode(55) comprises a base part(55a) of a cylindrical shape and a taper part(55b). The taper part(55b) has an end portion of a larger diameter than that of the base part(55a).
Patent KR-20000061281-A (KR)
Inventor: CHO YU HO
IPC: G11B7/08
Filed: 1999-03-25
Abstract: PURPOSE: An axial-type optical pick-up actuator having a magnetic circuit is provided for enhancing an electromagnetic levitation forces and driving sensitivity of a lens holder by fixing a magnetic circuit magnet to a lens holder. CONSTITUTION: A circular hole(43) is formed at the center of a lens holder(40) for thereby fixing an object lens(42). A shaft hole(50) is formed at one side. An elongated hole(48) is formed at the other side, and a tracking coil(46) is wound. A focusing coil(44) is wound around the lateral surface. A yoke(10) fixes a center shaft(14) inserted into a shaft hole(50) of the lens holder(40) and is positioned at the outer portions of the tracking coil(46) and the focusing coil(44) and forms a bent plate(12) for fixing the magnet(20).
Patent KR-20000066593-A (KR)
Inventor: PARK YEONG U
IPC: G02F1/13357
Filed: 1999-04-19
Abstract: PURPOSE: A backlight of LCD is provided to simply fasten optical films to a frame, thereby shortening fabrication period and preventing the films from being wrinkled. CONSTITUTION: A backlight of LCD comprises an outline frame(21), a light pipe(22), a reflective film(23), a bottom diffusion film(24), two prism films(25,26), a top diffusion film(27) and a clip(20). The light pipe(22) guides light of a light source to a front of the backlight. The reflective film(23) reflects the light of the light pipe toward the light pipe. The bottom diffusion film(24) is disposed on the light pipe to diffuse the light on the front side of the backlight. The prism films(25,26) serve to focus the light passed through the film(24) in desired directions. The top diffusion film(27) diffuses the light passed through the film(26) and protects the film(26). The four films(24-27) are fastened to the frame by the clip(20).
Patent KR-20000073699-A (KR)
Inventor: HYUN JEONG SUK
IPC: H04W48/18
Filed: 1999-05-13
Abstract: PURPOSE: A method for limiting calls of an originating subscriber in a mobile communication system is provided to configure a home/roaming limit prefix number information table for limiting a call access of a home/roaming subscriber relating to a specific incoming prefix number, so as to limit a call access of the originating subscriber, depending on whether the originating subscriber is a homer or a roamer and according to the incoming prefix number. CONSTITUTION: A mobile switching center(MSC) divides originating subscribers into homers or roamers to store the divided subscribers. The MSC sets up call access limits relating to the homers and the roamers in a specific incoming prefix number, and stores information on the call access limits. The MSC receives an originating telephone number and an incoming telephone number from a mobile station. The MSC analyzes the originating/the incoming telephone numbers. The MSC identifies whether the call access limits are set up in an incoming prefix number of the incoming telephone number. If so, the MSC identifies whether an originating subscriber of the mobile station is a homer or a roamer. If the originating subscriber is the homer and the incoming prefix number limits a call access relating to the homer, the MSC limits the call access relating to the incoming prefix number. If the originating subscriber is the roamer and the incoming prefix number limits a call access relating to the roamer, the MSC limits the call access relating to the incoming prefix number.
Patent KR-20000074114-A (KR)
Inventor: KANG JU
IPC: C04B2/02
Filed: 1999-05-18
Abstract: PURPOSE: A process for manufacturing quicklime in a vertical furnace at reoperating time is provided to produce good quality of quicklime and increase productivity due to recovering interior temperature of kiln in a short time. CONSTITUTION: The process for manufacturing quicklime in a vertical furnace at reoperating time is characterized in that 300ton/day of productivity is set, and 2606Nm3/hr of gas applying 810kcal/kg-CaO of H.C(calory for producing 1kg of CaO), 15324Nm3/hr of burning air applying 4.529 of a theoretical air ratio, and 10430Nm3/hr of cooling air applying 0.7 of a cooling air ratio are charged, resulting in 1.8ton/charge of basic charge for 10hrs. of closing time, which is charged by charge/# I, II kiln, in turns
Patent KR-20000075331-A (KR)
Inventor: OH SEUNG HUN
IPC: H04N5/64
Filed: 1999-05-31
Abstract: PURPOSE: A LCD(liquid crystal display) monitor with a tilt device is to fixedly place a displaying portion of the LCD monitor at a desired tilt angle and continuously maintain a tilt adjusting state of the displaying portion. CONSTITUTION: A LCD monitor with a tilt device comprises a displaying portion(2), a tilt angle(9) disposed at a bottom to support a fixing state of the displaying portion, and a tilting unit for fixing the displaying portion to the tilt angle to allow the displaying portion to be tilted at a desired angle. In the LCD monitor, the tilting unit comprises a tilt cover(6) attached to a rear cover(4) of the displaying portion, a hinge shaft(36) of which both ends are fixed to a bracket(13) at a side of the tilt cover, a gear member(38) fixedly disposed at the hinge shaft, a fixing shaft(40) of which both ends are fixed to a bracket(31) at a side of the tilt angle, a latch member rotatably mounted at the fixing shaft to be removably fitted to a recess portion of the gear member, and an elastic member coupled to the fixing shaft to elastically support the latch member. The latch member is formed into a cam(42) of which a knob is removably fitted to the recess portion of the gear member.
Patent KR-20010001217-A (KR)
Inventor: JUNG BOOK CHUN
IPC: B01D27/02
Filed: 1999-06-02
Abstract: PURPOSE: An oil filtration apparatus is provided, to reduce the filtration time, to prevent the filtration aids coated on a filtration member from being peeled off, and to improve the filtration efficiency of oil. CONSTITUTION: The oil filtration apparatus comprises an oil release pipe where a plurality of inhalation holes are formed in regular intervals, which is placed in the filter housing which is divided to upper and lower cases; and a plurality of filter nets which are placed in the oil release pipe and correspond to the each inhalation hole, wherein it is provided with an inflow hole(15) provided with a buffle plate(18), in the lower case(12); the filter disk(30) of the filtration member(30) are welded to be bound to filter nets; and porous filtration aids(36) is coated on the filter nets(34,35). Preferably the filtration aids(36) is made of diatomite.
Patent KR-20010001838-A (KR)
Inventor: LEE BYEONG JU
IPC: B60R25/04
Filed: 1999-06-09
Abstract: PURPOSE: An antitheft device for a vehicle is provided to generate a first alarm when a non-authorized driver gets into the vehicle, to generate an alarm and lock a gear when the non-authorized driver starts the vehicle and to generate a third alarm and transmit a wireless call signal to an owner. CONSTITUTION: On releasing a vehicle door in an abnormal way, a supersonic sensor(10) senses if there is a non-authorized driver. In case of theft trial, a CPU(central processing unit)(20) generates a first alarm through an alarm unit(30). In spite of the alarm, the non-authorized driver tries to start a vehicle and the CPU locks a gear by a gear controller(40) and generates a second alarm. Continuously, the CPU transmits a wireless calling signal to an owner and generates a third alarm.
Patent KR-20010002284-A (KR)
Title: Magnetron sputtering apparatus
Inventor: JUNG YONG HWA
IPC: H01L21/20
Filed: 1999-06-14
Abstract: PURPOSE: A magnetron sputtering apparatus is provided to design a metal target to be a round type and thus to be convex upward, thereby improving an adhesive property between the target and an attached material accumulated at a center portion of the target. CONSTITUTION: The device comprises a wafer holder(100) in which a wafer(102) is fixed, and a plate(104) disposed at a lower end of the wafer holder to be opposite to the wafer holder, wherein a metal target(106) served as a cathode electrode is disposed at the plate, and the metal target is formed into a round type to be convex upward at a center portion thereof. In the apparatus, the wafer holder and the plate are disposed at an upper and lower portion of the apparatus to be opposite to each other. A magnetron electrode(108) comprised of an internal magnetron electrode(108a) and an external magnetron electrode(108b) is disposed at a lower portion of the plate to be apart from each other at an interval.
Patent KR-20010003055-A (KR)
Inventor: KO IK HWAN
IPC: H01J1/30
Filed: 1999-06-21
Abstract: PURPOSE: A method for fabricating a field emission display device is provided to stabilize the field emission display device and to extend the life thereof by increasing the number of route between a gate electrode layer and a cathode line. CONSTITUTION: A method for fabricating a field emission display device comprises the steps of: forming an insulating film(22) on a substrate(20) formed a cathode line(21); forming many photoresist film pattern spaced from each other with a certain distance therebetween on a top face of the insulating film; forming a gate electrode layer(24) on the front surface of the substrate; forming many holes by etching the gate electrode layer to expose a part of the photoresist film pattern; forming many gate hole by etching the photoresist film pattern and the insulating film successively to expose the cathode line; forming many emitter tip on the cathode line within the gate hole; removing the many photoresist film pattern. Since the photoresist film pattern is removed after being formed between the cathode line and the electrode layer, and the insulating film is not used, the number of pass between the gate electrode layer and the cathode line is reduced.