baber/WOPTO huggingface dataset:
Patent KR-20010016446-A (KR)
Title: High-accuracy Transresistance amplifier
Inventor: CHA HYEONG WOO
IPC: H03F3/34
Filed: 2000-12-11
Abstract: PURPOSE: A high-accuracy trans-resistance amplifier is provided to cause the DC offset voltage of a current input terminal and an input impedance to substantially become zero to form an ideal current input terminal and cause an output impedance to substantially become zero to increase the drive performance of output voltage. CONSTITUTION: A high-accuracy trans-resistance amplifier comprises two current followers(CF) for current input, a current adder, a resistor(R) and a voltage follower(VF). The current adder calculates the difference between two input currents. The resistor(R) outputs the voltage of the adder. The voltage follower(VF) outputs the voltage of the resistor(R). A portion of the current and voltage followers(CF,VF) corresponding to a basic cell utilize same circuit, respectively.
Patent KR-20020048030-A (KR)
Title: Structure for opening of glove box for automobiles
Inventor: OH JUN HWAN
IPC: B60R7/06
Filed: 2000-12-15
Abstract: PURPOSE: A glove box structure is provided to improve external appearance by allowing a hanging plate to be moved upwardly so that a gap is prevented from occurring between a glove box door and a striker, when the glove box is opened. CONSTITUTION: A glove box structure comprises a hanging plate(13), a double locker(10) and a handle(20). The hanging plate(13) is equilateral trapezoid in shape. Gear portions(13a) are formed at both lateral edges of the hanging plate(13). The double locker(10) is provided at its end with ratchet gears(12). The double locker(10) applies resilient force to the hanging plate(13). The double locker(10) has two co-linearly disposed key set plates(11). The handle(20) has a hanging portion(21). The hanging portion(21) is hanged to the lower end of the hanging plate(10). When the handle(20) is pulled down, the hanging plate(13) is moved upwardly. As a result, the hanging is released.
Patent KR-20020009381-A (KR)
Title: Semiconductor device and method manufacturing the same
Inventor: KOMADA DAISUKE
IPC: H01L21/768
Filed: 2000-12-18
Abstract: PURPOSE: To provide a semiconductor device having a dual damascene interconnection which is able to sufficiently protect a surface of an underlayer conductive layer, has a high reliability performance and a lower interconnect capacitance. CONSTITUTION: The semiconductor device comprises a substrate having a conductive region therein, an insulating etch stop film covering the substrate surface, an interlayer insulating film formed on the insulating etch stop film, a trench with an interconnection formed to a first depth from the surface of the interconnection layer, a contact hole reaching the conductive region from the bottom of the trench with an interconnection and the dual damascene interconnection formed by filling the trench with an interconnection and the contact hole, and includes the first insulating layer wherein the interlayer insulating film includes a sidewall and a bottom of the trench with an interconnection and the second insulating layer lying in the lower level than the first insulating layer and having an etching selectivity different from that of the first insulating layer.
Patent KR-20020051159-A (KR)
Title: Feeder for film inspection
Inventor: WOO SEOK HA
IPC: B65H43/00
Filed: 2000-12-22
Abstract: PURPOSE: A supplier for testing a film is provided to conveniently appearance by equally transmitting the film to equally wind the film by mounting a tension controller of a taper. CONSTITUTION: A supplier testing a film comprises a supplying reel(120) mounted on a frame(110); a winding reel(130) installed on the frame; a driving motor driving the supplying and winding reels; a tension controlling unit(140) controlling tension of a film(10); a controller(150) controlling the driving motor; an interleaving paper transferring unit(160) mounted on upper portions of the supplying and winding reels; a testing unit(170) testing the film; an optical sensor(180) detecting dropping of the film by being mounted on a lower portion of a shaft of the reels; a pair of sprockets(141,142) arranged on the tension controlling unit; plural spring rollers(143,144) mounted between the supplying reel and the winding reel; a clutch connected to the supplying reel; a guiding roller(162) formed on the upper frame; and an idle roller.
Patent KR-20020054525-A (KR)
Title: Transceiver of mobile communication terminal for dual band/tri mode
Inventor: OH JEONG IL
IPC: H04B1/40
Filed: 2000-12-28
Abstract: PURPOSE: A transceiver of communication terminal for dual band/tri mode is provided to change IF frequencies of PCS type and CDMA, AMPS types, used in a reception side, into IF frequencies having same frequency band and change IF frequencies of PCS type and CDMA, AMPS types used in a transmission side into IF frequencies other frequency bands each other, thereby simplifying the circuit design. CONSTITUTION: A diplexer(11) combines a PCS(Personal Communication Service) duplexer and CDMA(Code Division Multiple Access), AMPS(Advanced Mobile Phone) duplexer for operating according to PCS type or CDMA, AMPS types, respectively. A PCS duplexer(12) charges a transmission/reception of a signal by PCS type. A CDMA/ AMPS duplexer(13) charges a transmission/reception of a signal by CDMA/AMPS type. The first and the second LNA(Low Noise Amplifier)(21,22) amplify each RF frequency received from the PCS duplexer(12) and CDMA/AMPS duplexer(13). The first and the second RF SAW(Surface Acoustic Wave) filter(23,24) remove the noise of each RF frequency amplified from the first and second LNAs(21,22). The first mixer(31) mixes RF frequency with PCS local frequency and then outputs an IF frequency of 183.6MHz band. The second mixer(32) mixes RF frequency with CDMA/AMPS local frequency and then outputs an IF frequency of 183.6MHz band. The third mixer(33) mixes RF frequency with CDMA/AMPS local frequency and then outputs an IF frequency of 183.6MHz band. The first switch(34) switches IF frequencies of PCS type and CDMA type. The first IF BPF(35) passes the IF frequency inputted through the switch(34) by a bandwidth-limited operation. The second IF BPF(36) passes the IF frequency of AMPS type by bandwidth-limited operation. An IFR(Intermediate Frequency Receiver)(37) receives and processes the IF frequency transmitting the first and second IF BPFs(35,36).
Patent KR-20020054813-A (KR)
Title: Method and apparatus for a pre-heating controlling in diesel vehicles
Inventor: KIM YEONG GAP
IPC: F02M31/02
Filed: 2000-12-28
Abstract: PURPOSE: An ECU monitors heater operation for heater disorder to stop engine preheating or warn a driver with a lamp lighting, thereby improving safety and startability. CONSTITUTION: An automobile condition information is detected by a water temperature sensor(110), an intake air temperature sensor(120), an atmosphere temperature sensor(130). A controlling portion(200) calculates a duration time of a heater heating by the detected automobile condition information when an ignition switch is turned on, and analyses monitored preheating device information, and outputs information by a preheating lamp. A first and second relay(400, 500) supplies power for the heater heating switched by the signal of the controlling portion. A diode(700) monitors disorder of the relays and heater connected in parallel with the heater.
Patent KR-20020056015-A (KR)
Title: Contact of semiconductor device and method for fabricating the same
Inventor: NAM UNG DAE
IPC: H01L21/28
Filed: 2000-12-29
Abstract: PURPOSE: A contact of semiconductor devices and its formation method are provided to prevent short between a gate electrode and a contact interconnection even though design rule reduces. CONSTITUTION: A contact of semiconductor devices comprises an isolation oxide layer(22) formed in a shallow trench and a cylindrical structure oxide layer(23) on a semiconductor substrate. Both sides of the cylindrical structure oxide layer serves as a sidewall oxide layer(23a) and the gap between the both sides as a gate oxide layer(23b). In the both sides of the cylindrical structure oxide layer, an impurity region of a source/drain(25) is formed. In the gap between both sides as a gate oxide layer, a gate electrode(26) and a silicide(27) are sequentially formed. A sidewall spacer(28) comprised of a silicon nitride layer is formed in the both sides of the sidewall oxide layer.
Patent KR-20020058296-A (KR)
Title: Abnormal state of water cooled type cable detecting device
Inventor: CHO JUNG GWAN
IPC: G01R31/02
Filed: 2000-12-29
Abstract: PURPOSE: An apparatus for detecting an abnormal state of a water-cooling cable is provided to inform an exchanging time of a water-cooling cable by detecting correctly an abnormal state of the water-cooling cable. CONSTITUTION: A current transformer(22) is installed in a water-cooling cable in order to detect current. A measuring current/voltage converter(31) converts the detected current to voltage. A measuring voltage converter(24) distributes the converted voltage. A recording portion(25) records the voltage. A measuring voltage amplification portion(29) amplifies an output of the measuring voltage converter(24). A setup current/voltage converter(23) detects the secondary current of the current transformer(22) and converts the secondary current to voltage. A setup voltage converter(28) distributes the voltage of the setup current/voltage converter(23). A setup voltage amplification portion(30) amplifies the voltage of the setup voltage converter(28). A comparison and decision portion(26) compares measured voltage values to each other and output an abnormal signal to an alarm portion(27) according to a compared result. A power breaker(20) breaks the electric power according to an alarm of the alarm portion(27).
Patent KR-20020056992-A (KR)
Title: Portable radiotelephone with magnetic rubber
Inventor: JUN HONG JUN
IPC: H04B1/38
Filed: 2000-12-30
Abstract: PURPOSE: A portable wireless terminal having rubber magnets is provided to minimize noise generated in opening and closing a flip or a folder, and prevent the flip or the folder from being opened voluntarily. CONSTITUTION: An antenna device(1010) is mounted at the top end of a main body(1000). An earpiece(1020) including a speaker is mounted at the lower part of the antenna device(1010). An LCD part(1030) is mounted at the lower part of the earpiece(1020). A key pad(1040) including a plurality of number keys and function keys, is arranged at the lower part of the LCD part(1030). A mike device(1060) is installed at the bottom end of the main body(1000). A hinge device is installed at the side of the mike device(1060). At least one or more magnetic rubber(10) is installed at the predetermined position of the main body(1000). The other magnetic rubbers(10) are installed at the inner surface of a flip(2000) corresponding to the magnetic rubbers(10) installed at the main body(1000), so that the magnetic rubbers(10) contact each other when the flip(2000) is closed to the main body(1000).
Patent KR-20010022189-A (KR)
IPC: C08L71/02
Filed: 1998-07-23
Abstract: Halogen-free polyolefin blends are provided which are flame retardant and are particularly useful in replacing polyvinyl chloride for production of different products such as coatings for wire and cable and sheets for floor tiles. The blends comprise (1) ethylene vinyl acetate carbon monoxide terpolymer, (2) an ethylene vinyl acetate or polyolefin; (3) an ethylene vinyl acetate or polyolefin grafted with a carboxylic acid or an anhydride thereof; and (4) an inorganic filler.
Patent KR-20010023491-A (KR)
Title: Ｆｅｃ 코딩 및/또는 변조의 재선택에 의한 블록 ａｒｑ를위한 방법 및 시스템
IPC: H04L1/00
Filed: 1998-08-25
Abstract: 통신 시스템은 다수의 변조/코딩 스킴을 지원한다.  접속 품질이 허용 임계치 이하로 떨어질 때, ARQ 기술은 노이즈 및/또는 간섭에 보다 강한 대안의 변조/코딩 스킴을 사용한다.  정보 블록의 유연한(flexible) 재세분화 및 맵핑이 지원된다.
Patent KR-20010023514-A (KR)
Title: 집적회로 테스터용 프로그램 가능한 포맷터 회로
IPC: G11C29/56
Filed: 1998-08-20
Abstract: 다중 채널 집적 회로 테스터용 포맷터 회로(16)가 구동 제어 회로(72), 비교 회로(74) 및 랜덤 액세스 메모리(RAM)(70)를 포함한다.  상기 RAM은 입력 포맷 선택 데이터의 각각의 값을 구동 제어 및 비교 회로로 제공되는 대응하는 포맷 제어 데이터로 변환한다.  상기 구동 제어 회로(72)는, 상기 테스터 채널이 테스트 중인 장치(DUT)의 단자로 공급하는 테스트 신호의 상태를 결정하는 한 셋트의 구동 제어 신호를 생성한다.  비교 회로는 상기 단자에서의 DUT 출력 신호가 기대 논리 상태에 있는지를 결정한다.  상기 구동 제어 신호의 기대 상태 또는 DUT 출력 신호의 기대 상태를 참조하는 다양한 대체 데이터 소오스 가운데 선택하기 위하여 상기 구동 및 비교 회로는 RAM의 포맷 제어 데이터 출력에 의해 제어되는 멀티플렉서(84,86)를 도입한다.  포맷터 구성은 입력 참조 데이터를 탄력성있게 사용하도록 함으로써, 광범위의 선택가능한 구동 및 비교 포맷을 제공한다.
Patent KR-20010031938-A (KR)
Title: 삼산화비소 조성물을 생산하는 방법 및 삼산화비소 또는멜랄소프롤을 이용하여 암을 치료하는 방법
IPC: A61K31/555
Filed: 1998-11-10
Abstract: 본 발명은 다양한 백혈병, 림프종, 고형암을 치료에 사용하는 삼산화비소의 용도에 관한다.  또한, 비소화합물은 레티노이드와 같은 다른 치료요법적 약물과 병용하여 사용한다.  본 발명은 또한 삼산화비소 조성물을 생산하는 방법을 제공한다.
Patent KR-20010032789-A (KR)
IPC: C12Q1/68
Filed: 1998-12-01
Abstract: 본 발명의 자체-어드레스가능한 자가조립형 마이크로일렉트로닉 소자는 다단계 및 다중 분자생물학적 반응을 현미경 수준의 미시적 형식으로 능동적으로 수행 및 제어할 수 있도록 설계 및 제작된 것이다.  그러한 분자생물학적 반응으로는 핵산 혼성화, 항체/항원 반응, 진단 및 생체고분자 합성 등이 있다.  이 소자는 미세석판술 및 미세기계가공술을 사용하여 제작될 수 있다.  이 소자는 특이적 결합체의 특이적 마이크로위치들로의 수송 및 부착을 전자적으로 제어할 수 있다.  그 특이적 결합체로는 핵산 및 펩티드 등의 분자생물학적 분자가 있다.  이 소자는 계속해서 어드레스된 특이적 마이크로위치에서 분석물 또는 반응물의 수송 및 반응을 제어할 수 있다.  이 소자는 분석물 및 반응물을 집중시키고, 비특이적으로 결합된 분자를 제거하며, DNA 혼성화 반응을 위한 엄격도 조절을 제공하며, 분석물의 검출을 향상시킨다.  이 소자는 전자적으로 복제될 수 있다.
Patent KR-20010032860-A (KR)
Title: Ink composition comprising first and second optically variable pigments
IPC: C09D11/00
Filed: 1999-10-08
Abstract: An ink composition containing at least two different types of optically variable pigments which produce a film or coating having a viewing angle dependent color shift.
Patent KR-20010033873-A (KR)
Title: 전기적 콘택트 배열을 위한 지지체
IPC: H01R24/00
Filed: 1999-01-21
Abstract: 본 발명은 전기적 콘택트(electrical contact; 3)가 배열된 전기적으로 비도전성의 기체(base body)를 갖추고, 전기적 콘택트 배열을 위한 지지체(support body; 1)에 관한 것이다.  지지체(1)는 조립될 수 있는 각 소자(2, 4)로 이루어진 모듈러 설계(modular design)를 갖는다.  각 소자(2)는 콘택트(3)를 갖추고 있거나 갖추고 있지 않다.
Patent KR-20010040778-A (KR)
Title: 다시 밀폐 가능한 주입 요소 및 그것과 함께 제공된평평한 박공 지붕 모양의 혼합물 포장
IPC: B65D17/34
Filed: 1999-02-05
Abstract: 본 발명의 설명 및 기술은 개구 수단으로 동시에 사용하는 베이스 부재(2)와 밀폐 뚜껑(3)을 가진 다시 밀폐 가능한 주입 요소(1)이고, 상기 주입 요소(1)의 개구 표면을 둘러싸는 플랜지는 평평한 박공 지붕 모양의 혼합물 포장(P)에 고정되게 연결되고, 및 밀폐 뚜껑(3)은 베이스 부재(2)의 상응한 홈(5)에 지지되는 측면 베어링 핀(4)을 구비하고, 베이스 부재(2)와 밀폐 뚜껑(3)사이의 안전한 연결 및 평평한 박공 지붕 모양의 혼합물의 확실한 개방/밀폐 작용은 베이스 부재(2)내에 홈 (5)이 밀폐 뚜껑(3)이 베이스 부재(2)내에 제공된 베어링 핀(4)을 수용하기 위해 홈(5) 내부로 포장 측으로부터 죄어질 수 있도록 포장 측부상에 배열되는 것으로 이루어질 수 있다.
Patent KR-20010052212-A (KR)
Title: 베이스 유닛내에 삽입된 모뎀을 구비한 파워라인 캐리어데이터링크
IPC: H04M11/00
Filed: 1999-03-19
Abstract: 파워라인 캐리어 통신장치는 상기 장치의 베이스 유닛(102)내에 합체되거나 삽입된 고속 모뎀을 구비하여 모뎀 데이터 신호 전송 속도의 저하를 최소화한다. 본 장치는 파워라인 캐리어 연장 유닛(107)과 조합되어 작동하며, 상기 연장유닛은 사용자의 전자장치(110)과 통신하면서, 표준 AC 파워라인(105)을 지나 표준전화선을 거쳐 전자장치(110)으로(으로부터) 정보를 통신하도록 구비된다.
Patent KR-20010042837-A (KR)
Title: 치환된 벤즈아미드, 이의 제조 방법 및 시스테인프로테아제 억제제로서의 용도
IPC: A61P35/00
Filed: 1999-04-19
Abstract: 본 발명은 하기 화학식 (I)의 벤즈아미드 및 그 토토머 형태, 가능한 에난티오머 및 디아스테레오머 형태, E 및 Z 형태, 및 가능한 생리학적으로 내성이 있는 염에 관한 것이다. 
     ＜화학식 I＞ 
     
       
     
     상기 식에서 R 1 , R 2 , R 3 , A 및 B는 청구항 1에 정의된 의미를 갖는다. 
     본 발명은 또한 시스테인 프로테아제의 억제제로서의 용도에 관한 것이다.
Patent KR-20010052410-A (KR)
Title: 진화적 알고리즘을 통한 진화 광고
IPC: G06N3/12
Filed: 2000-03-22
Abstract: 대안의 광고 특성들에 대한 직접적 시행 착오 검색(directed trial and reeor search)을 효과있게 하기 위해 진화 알고리즘을 사용한다.  표본 광고들의 초기 집단이 제공되고, 각각의 광고의 특징들을 그 집단의 각각의 회원과 관련된 일련의 유전자로서 인코드한다.  각각의 회원에 대한 유효성은 예를 들어 횟수(the number of times)를 이용해서 평가되고, 인터넷 사용자는 각각의 광고를 클릭한다.  상기 집단의 회원들은 모 광고들로부터 특징들을 상속받은 복수의 자식 광고(offspring advertisements)를 생성한다.  다른 광고들보다 나은 유효성을 보이는 집단의 회원들이 자식 세대(offspring generation)를 위해 우선적으로 선택된다.  다른 광고들보다 나은 유효성을 갖는 모 광고들을 계속해서 우선적으로 선택하면, 높은 수준의 유효성을 갖는 자식 광고를 생성할 가능성이 증가한다.  이 진화 프로세스에서 특정한 특징들 또는 특징들의 조합의 전개는 유효한 결과를 생성하는 광고 특징들의 지표 및 검증을 제공한다.
Patent KR-20020062073-A (KR)
Title: Real-time advance booking system through online and/or offline
Inventor: PARK SANG YEOL
Filed: 2001-01-19
Abstract: PURPOSE: A real time reservation system is provided to search an optimum tourist resort through the tour information provided by a user and to enable the user to reserve and buy a customized tour in real time. CONSTITUTION: The real time reservation system comprises a main tour plan writer/generator(10) outputting the optimum tourist resort and the expense estimate and enabling the user to select one from the recommending customized tour goods by combining/analyzing the tour information inputted by the user, and a reservation approval processor(20) informing a member store of the tour goods selected by the user and informing the user of the stock status of the tour goods from the member store. A member shop manager(30) enables the user to make the reservation by displaying the basic information held by the member store, to confirm the reservation state in real time and to receive the reservation contents.
Patent KR-20020064492-A (KR)
Title: Invasion alarm equipment
Inventor: CHUNG JAE MOON
IPC: G08B13/00
Filed: 2001-02-02
Abstract: PURPOSE: Provided is an infiltration alarm device which is configured to alarm against infiltration with external structure like gas pipe or so on used so that it is widely used to protect infiltration through external structure. CONSTITUTION: The infiltration alarm device is characterized by comprising the parts of: a first tool which is adhered to an external structure and configures on a center of a weight sensor such as a strain gauge(1) to detect force added to the external structure in infiltration; a second tool which configures as an electric circuit(2) to treat the detected signal by the first tool and judge the presence of the infiltration; and a third tool which informs the presence of infiltration judged through the second tool by wanted alarm method.
Patent KR-20010085695-A (KR)
Title: Compressor with control and protection system
Inventor: MCCROSKEY WILLIAM W
IPC: G05B9/02
Filed: 2001-02-28
Abstract: PURPOSE: A compressor having a controlling and protecting system is provided to cut down expenses by reducing wiring with using a common electronic platform, and to improve reliability by applying common logic for integrating information. CONSTITUTION: A compressor assembly includes a compressor(10); a temperature sensor combined with the compressor; a pressure sensor combined with the compressor; and a control block interchanging information with the temperature sensor and the pressure sensor, and monitoring the operation of the compressor. A sub protecting and controlling system of the compressor detects temperature and pressure for a scroll machine and mis-wiring, and prevents vibration by integrally forming the vibration sensor in a circuit board. The vibration sensor is combined with a timer to monitor vibration of the scroll machine to stop the machine in vibrating excessively. The machine is stopped in detecting troubles, and the sub system is combined with the surrounding interface to communicate a central control system.
Patent KR-20020070561-A (KR)
Title: A method of proving an IP address in mobile packet network
Inventor: PARK YEONG HO
IPC: H04L12/28
Filed: 2001-02-28
Abstract: PURPOSE: A method of supplying an Internet protocol address in a mobile packet network is provided to allocate a private IP(Internet Protocol) address to an individual subscriber of a wireless communication network to give a service, and to call back the allocated private IP address after the service ends, thereby resolving a deficiency in addresses. CONSTITUTION: When an originating call is received to an originating provider network from an originating terminal, a mobile packet network retrieves an originating public IP address based on an ID of an originating subscriber, and supplies a registered IP address of a receiving subscriber to a receiving provider network from the originating provider network to receive a receiving public IP address, then transmits the receiving public IP address to the originating terminal. The mobile packet network receives a packet data unit in the originating provider network from the originating terminal on the basis of the originating/receiving public IP addresses, and transmits the packet data unit to the receiving provider network. The mobile packet network retrieves a receiving number based on the receiving public IP address, and provides the receiving public IP address to the receiving terminal with the receiving number, then transmits the received packet data unit.
Patent KR-20020071334-A (KR)
Title: A process for preparing α-glycosidase inhibitor derived from powdery silkworm
Inventor: AHN MI YEONG
IPC: C07D211/14
Filed: 2001-03-06
Abstract: PURPOSE: Provided is a process for preparing α-glycosidase inhibitor derived from powdery silkworm, which has the same decreasing effect of blood glucose level as acarbose which is a conventional therapeutic agent for diabetes. CONSTITUTION: The process for preparing α-glycosidase inhibitor comprises the steps of: freeze-drying and powdering silkworm then adding 50% ethanol to extract it; performing cation exchange column chromatography with the extract then followed by eluting it with 0.5N of NH4OH and concentrating it; dissolving the concentrate in water then followed by performing anion exchange column chromatography. eluting with water and concentrating it; dissolving the concentrate in water then followed by cation exchange column chromatography, eluting with water and 0.5N of NH4OH to obtain 5 fractions obtain one fraction respectively; and performing anion exchange column chromatography with the second fraction among the 6 fractions to obtain pure 1-dioxynojirimycin fraction.
Patent KR-20010094957-A (KR)
Title: Liquid crystal display and inspection method thereof
Inventor: HAYASHI KATSURO
IPC: G09F9/00
Filed: 2001-03-07
Abstract: PURPOSE: To obtain a liquid crystal display device, which can inspect a connection state of a transfer, and its inspecting method, while ensuring the electrical connection of a pad and the transfer. CONSTITUTION: In the electrically conductive pad 1008 of the transfer which electrically connects two substrates, a light transparent part 1102 is formed by using an ITO. The connection state of the transfer 1003 connected to an opposite side through the light transmitting part can be verified visually. The light transmitting part adjacent to the going around direction of the pad is placed at 90° angle nearly perpendicular, and two mutually opposing transmitting parts are placed in the radial direction in nearly parallel. Because the light transparent part is formed in the electrically conductive pad by the ITO, the connection state of the transfer can be inspected from an array substrate side, and the electrical conductivity is also ensured.
Patent KR-20020075643-A (KR)
Title: Method for forming of the EMI protecting layer on a plastic substrate and an EMI protecting layer thereof
Inventor: LIM JO SUB
IPC: C23C14/35
Filed: 2001-03-27
Abstract: PURPOSE: A method is provided which forms an electromagnetic shielding film on a plastic substrate by minimizing thermal strain of the plastic substrate and minimizing residual stress of a coating layer, and an electromagnetic shielding device manufactured by the method is provided. CONSTITUTION: The method for forming an electromagnetic shielding film on a plastic substrate comprises the steps of forming a multilayered plating film comprising a copper plating film and a nickel plating film on the surface of the plastic substrate so that linear resistance becomes 1 to 3 ohm (/¥Øcm), wherein the uppermost plating layer is the chromium plating film (S20); positioning a mask on which holes are perforated depending on desired patterns of a thin film on the plating film of the plastic substrate so as to form a gold (Au) thin film for electromagnetic shielding on the multilayered plating film; depositing a multilayered film comprising a single film of each materials or a combination of the single films on the multilayered plating film using a sputtering target consisting of one or more materials selected from nickel, chromium, alloy of nickel and chromium (stainless steel 304, 316, 309, 440) through the mask by magnetron sputtering so as to improve adhesion force between the plating film and a gold thin film (S30); and forming an electromagnetic shielding gold thin film on the adhesion force improved film by magnetron sputtering (S40).