baber/WOPTO huggingface dataset:
Patent KR-20000026077-A (KR)
Title: Hands free car audio device
Inventor: PARK HEUNG SOO
IPC: H04B7/26
Filed: 1998-10-17
Abstract: PURPOSE: A hands free car audio device is provided to add a hands free function simply and cheaply, to reduce a conventional howling and echo phenomena, and to increase communication quality. CONSTITUTION: A hands free car audio device includes an audio circuit unit(106), a mobile phone call code connection unit(102), a mike(104), an audio processing unit(108), a switching unit(110), a power amplifying unit(112), speakers(FL, FR), a power unit(114), and a control unit(116). The audio circuit unit outputs an audio signal played from at least one of audio sources to a stereo signal. The mike is implemented in front of a driver seat in the car, and picks up a driver's voice. The audio processing unit receives a received voice signal of the mobile phone through the call code connection unit, selects a first stereo input of the driver's voice through the mike and at least one of second stereo input of stereo audio signal applied to the audio circuit unit. The switching unit switches selectively one output corresponding to the mike of the audio processing unit between a first speaker and the mike output terminal of the call code connection unit. The power amplifying unit inputs and amplifies the speaker output of the switching unit and another output of the audio processing unit. A pair of the speakers output a voice by output of the power amplifying unit. The power unit generates an operating voltage of each unit, a mobile phone battery voltage to the call code, and a mobile phone operating voltage. The control unit is connected to the mobile phone via the call code connection unit, controls charging of the battery in the hands free mode, controls the audio processing unit to select the first stereo input and the switching unit to select the call code connection unit in the communication mode, outputs a received voice signal through one of the pair of the speaker, applies the voice signal picked up in the mike to the mobile phone.
Patent KR-20000028260-A (KR)
Title: Method for writing  memo about telephone  number on watching tvcr
Inventor: LEE SANG JIN
IPC: H04N5/76
Filed: 1998-10-30
Abstract: PURPOSE: A method for writing a memo about a telephone number is to make a user conveniently check a telephone number on watching a TVCR. CONSTITUTION: If a user inputs a telephone number input key on a remote controller, a memo screen is displayed by a timer. At this time, the inputted telephone number is stored in a memory. And, the memo screen is off when the user inputs the telephone input key one more time. Also, the memo screen is automatically off after a predetermined time.
Patent KR-20000031928-A (KR)
Title: Discharge valve assembly of linear compressor
Inventor: KWON BYEONG HA
IPC: F04B17/04
Filed: 1998-11-11
Abstract: PURPOSE: A discharge valve assembly of a linear compressor is provided to prevent the collision noise caused by the backward flow of compressed gas. CONSTITUTION: A part of refrigerant gas is sprayed through gas holes(13b) to push valve plates(100,200) isolating the gas holes, and then discharge valves(13). The valve plates are stopped on a certain position by a discharge spring(15), but the discharge valves are continued to push and completely adhered to the front surface of the discharge plates. Therefore, the flowing-backward of compressed gas is minimized to reduce the suction loss of refrigerant gas when a piston is moved forward. Also, the collision noise or damage caused by the return of the discharge valves is prevented by returning the discharge valves in the opposite direction after the valves are completely adhered to the valve plate.
Patent KR-20000010502-A (KR)
Title: Information service providing system and method
Inventor: LEE JOON
IPC: H04M3/56
Filed: 1998-12-01
Abstract: PURPOSE: An information service providing system and method are provided to enable a subscriber who is in connection with the communication network to answer the telephone for a third person who wants to call the subscriber. CONSTITUTION: An information service providing system(24) includes an automatic response service(ARS) subsystem(26) which is connected to a telephone network(22), and an information service provider(ISP) server(25) which is connected to the telephone network and provides a plurality of subscribers with an on-line information service. The ARS subsystem receives an information of the ISP subscriber whom the originating person wants to call and the originating person's information from the originating person. The ISP server is connected to the ARS subsystem, and provides the originating person's information to the subscriber who corresponds to the subscriber's information received in the ARS subsystem. Therefore, the subscriber can answer the telephone for the originating person even when the subscriber is in connection with the communication network.
Patent KR-20000040504-A (KR)
Title: Method for transferring work information of telephone installation and failure repair
Inventor: KIM WOO SEONG
IPC: H04B17/00
Filed: 1998-12-18
Abstract: PURPOSE: A method for transferring the work information of telephone installation and failure repair is provided to reduce time to transfer work information, to transfer exact data and to improve work efficiency, by embodying so that site personnel can search work information transmitted through personal communication terminals by wireless in the present location. CONSTITUTION: If telephone installation request is received by a telephone installation work management system(13)(201), the telephone installation work management system(13) transmits telephone installation request information to an information transfer system(11)(202). If the information transfer system(11) transmits telephone installation request information to the personal communication terminal(12) of an associated site personnel through the SMS(Short Message Service) of the PCS network(203), the personal communication terminal(12) receives the details of telephone installation request information through the data service of the PCS network automatically(204,205). If the work of the personnel is completed and the personal communication terminal(12) transmits the work result to the information transfer system(11)(206), the information transfer system(11) reports the result to the telephone installation work management system(13)(207).
Patent KR-20000040580-A (KR)
Title: Idle hand-off method in mobile communication system
Inventor: KANG DAE HO
IPC: H04B7/26
Filed: 1998-12-18
Abstract: PURPOSE: An idle hand-off method in the mobile communication system is provided to maximize the battery usage time of a mobile communication terminal by minimizing the current consumption. CONSTITUTION: Power is supplied to a mobile station(S1). The mobile station attains the system of a signal having the largest signal strength among a variety of signals of base stations(S2). The mobile station repeats slip state and idle state in a uniform period and operates on a slot mode(S3). The mobile station monitors signals of various signal sets, maintaining the idle state(S4). The mobile station, judging that the signal strength of a neighbor set - the signal strength of a active set is 2dB and above, researches signals of various signal sets, maintaining the idle state(S5). The mobile station, judging that the signal strength of a neighbor set - the signal strength of a active set is 3dB and above, executes the idle hand-off(S6).
Patent KR-20000040725-A (KR)
Title: Phase control circuit
Inventor: KIM YOON CHEOL
IPC: H03L7/00
Filed: 1998-12-19
Abstract: PURPOSE: A phase control circuit is provided to selectively connect an inverter and a capacitor using a programmable memory element instead of prior fuse or metal option. CONSTITUTION: A phase control circuit comprises a delay unit and a data memory. The delay unit comprises a buffer, a first switch and a capacitor. The buffer receives and outputs clock signals. The first switch is connected between an output of the buffer and the capacitor. The data memory has first or second logic level as an initial value, receives reset signals and data signals, outputs the initial value to the control terminal of the first switch when the reset signal is the first logic level and outputs the logic level of the data signals to the control terminal when the reset signal is the second logic level.
Patent KR-19990030412-A (KR)
Title: 은분말이 혼합된 원적외선 방사 세라믹 분말이 내부에 도착된 의류 및 그 제조방법
Filed: 1998-12-28
Abstract: 본 발명은 은분말이 혼합된 원적외선 방사 세라믹분말이 내부에 도착된 의류및 그 제조방법에 관한 것으로서 세라믹 분말과 은분말을 혼합한 것을 바인더로 내의 등 의류 내부에 도착하여 인체의 혈액순환과 신진대사를 촉진하고 살균 및 항균작용과 세포의 면역기능을 강화하여 건강에 기여함을 목적으로 하는 것이다. 
     본 발명의 구성은 원적외선 방사 세라믹 분말이 도포된 섬유에 있어서, 이산화 규소(SiO 2 ) 30%, 산화마그네슘(MgO) 10%, 산화알루미나(Al 2 O 3 ) 45%, 산화은(Ag 2 O 순도 99.98-99.998%) 1%, 게르마늄(GE) 3.5%, 티타늄(TiO 2 ) 1.5% 를 상온에서 중량비로 혼합하여 400-1,000메시로 분말화 한것을 아크릴 액체 CH-305 CAS 합성물과 NEW DYFOAM W-400으로 조성된 혼합물을 바인더로 의류 내부에 도포함을 특징으로 하는 은분말이 혼합된 원적외선 방사 세라믹분말이 내부에 도착된 의류 및 그 제조 방법이다.
Patent KR-20000043865-A (KR)
Title: Preventer for false use of public phone
Inventor: JOENG GWANG YEONG
IPC: H04M17/00
Filed: 1998-12-29
Abstract: PURPOSE: A preventer for a false use of a public phone is provided to prevent stealing office line of the public phone, by deciding either call maintenance after detecting a non-voice band signal in a protection flag part. CONSTITUTION: A preventer for a false use of a public phone comprises an identification tone generator(51), a detector of signal inverting polarity(522), an identification tone detector(523), a title circuit(521), and a preventer of stealing line(52). The identification tone generator(51) transmits an identification signal responding to a signal inputted from an exchange, and prevents stealing a local, long-distance, and international call, by transmitting the identification tone whenever inputting each dial of first 3 of a telephone number, in dialing. The detector of signal inverting polarity(522) detects a charge signal from the exchange. The identification tone detector(523) includes a high frequency pass filter for extracting a signal of the non-voice band transmitted from the identification tone generator(522). The title circuit(521) controls each circuit loops the office line, to operate, if supplying with a power, and controls a line cutting according to either detecting of the identification tone. The preventer of stealing line(52) has a line cut circuit cutting a speech path, to be connect between an exchange and a protection flag in parallel.
Patent KR-20000046495-A (KR)
Title: Composite laminate
Inventor: LIM SEUNG KYU
IPC: B32B17/04
Filed: 1998-12-31
Abstract: PURPOSE: An economical composite laminate which excludes the needs on separate resin compounding process in preparing a prepreg and has improved break toughness while retains high specific strength and specific rigidity in forming a composite laminate is provided. CONSTITUTION: A composite laminate according to the present invention comprises prepregs(2) having a reinforcing fiber sheet in which tows(2b) comprising at least one of fibers selected from the group consisting of carbon fiber, glass fiber and boron fiber is aligned wherein the sheet is impregnated with a thermoset resin(2a) and a thermoplastic film(3) in which multiple holes(3a) are perforated in the direction of thickness is inserted and laminated between the prepregs(2).
Patent KR-19990024284-A (KR)
Title: 경량 단열 기포 콘크리트용 조성물
IPC: C04B24/38
Filed: 1998-12-31
Abstract: 본 발명은 경량 단열 기포 콘크리트용 조성물에 관한 것으로 식물성 기포제 0.1∼0.2 중량%, 시멘트 62∼65 중량%, 물 35∼38 중량%로 조성됨을 특징으로 하여 경량으로 단단하고 균일한 기포군을 형성시키므로써 시멘트의 침전을 방지하고 단열효과가 우수하며 시멘트 자재를 대폭 절감하는 뛰어난 효과가 있다.
Patent KR-19990044621-A (KR)
IPC: H01L21/316
Filed: 1996-01-25
Abstract: Processes are disclosed which facilitate improved high density memory circuitry, most preferably dynamic random access memory (DRAM) circuitry. An integrated circuit includes a semiconductor die (150); a plurality of functional and operably addressable memory cells (160) arranged in at least one array formed on the semiconductor die; and circuitry (162) formed on the semiconductor die and coupled to the memory cells for permitting data to be written to and read from the memory cells. The memory cells are formed with a minimum capable photolithographic feature dimension (F), and a single one of the memory cells consumes an area of no more than eight times the square of the minimum capable photolithographic feature dimension. <IMAGE>
Patent KR-19990064062-A (KR)
IPC: C08G18/70
Filed: 1996-10-04
Abstract: PCT No. PCT/GB96/02440 Sec. 371 Date Apr. 29, 1998 Sec. 102(e) Date Apr. 29, 1998 PCT Filed Oct. 4, 1996 PCT Pub. No. WO97/12924 PCT Pub. Date Apr. 10, 1997A water dispersible blocked polyisocyanate of formula (I) R-Ym, where R is an m valent group comprising an aliphatic, cycloaliphatic, heterocyclic or aromatic group and comprising at least three consecutive ethylene oxide groups or at least one residue of a polyhydroxy carboxylic acid, and each group Y, which may be the same or different, is a group of formula (II), where each R1 is the same or different when n is more than 1 and each R1 is an alkyl, alkenyl, aralkyl, N-substituted carbamyl, phenyl, NO2, halogen or a group -C(O)-O-R2 where R2 is hydrogen or an alkyl group; n is 0, 1, 2 or 3; and m is an integer of 2 or more.
Patent KR-19990067301-A (KR)
Title: 하이드로폰배열을위한휘기쉬운인터링크
IPC: G01V1/20
Filed: 1997-09-03
Abstract: 공통의 광 섬유를 설치하기 위한 원통형 맨드릴(mandrel)을 포함하는 형의 제 1 센서(sensor)를, 상기 광섬유를 설치하기 위한 원통형 맨드릴(mandrel)을 포함하는 하이드로폰(hydrophone)의 제 2 센서(sensor)에 연결하기 위한 휘기 쉬운 인터링크(flexible interlink).  인터링크(interlink)는 휘기 쉬운 재료의 일체의 주조된 몸체를 포함한다.  점점 커지는 지름 끝은, 밭쪽의 점점 가늘어지는 변이(變移) 부재에 의하여 연결되도록 결합한다.  탄력이 있는 금속 와셔는 센서를 추적하기 위하여 끝에 고정된다.  와셔는, 끝의 방사 부품에 인접하는 방사 부품(radia elements)을 포함한다.  와셔의 방사 부품(radia elements)은 밭쪽으로 기울어져 있고, 와셔의 방사 부품(radia elements)의 지름은, 끝의 일치하는 방사 부품(radia elements)과 끝에서 끝까지의 센서의 내부 지름보다 크다.
Patent KR-19990077166-A (KR)
Title: 신규한 시클로알킬 치환 이미다졸
Filed: 1997-01-10
Abstract: 치료에 사용하기 위한 신규한 1,4,5-치환된 이미다졸 화합물 및 조성물을 제공한다.
Patent KR-19990087748-A (KR)
Title: 화학적으로 유연화된 거친 셀룰로즈 섬유를함유하는 티슈 페이퍼
IPC: A47K10/16
Filed: 1997-03-13
Abstract: 화장실용 티슈, 화장용 티슈 및 생리대와 같은 부드러운 흡수용 위생 제품의 제조에 유용한 티슈 페이퍼 웹이 제공된다.  티슈 페이퍼의 복합 평균 거침도는 약 11mg/100m 내지 약 18mg/100m이다.  티슈 페이퍼는 폐쇄된 셀 벽, CTMP 또는 재활용 공급원으로부터 유도된 섬유와 같은 거친 셀룰로즈 섬유를 추가로 포함하는 화학적으로 유연화된 셀룰로즈 섬유를 포함한다.  셀룰로즈 섬유는 수학식 DCOF 〉 4.27 * C - 44.23에 의해 복합 평균 거침도(C)(mg/100m)에 관련된 저하된 마찰 계수(DCOF, %)를 갖는 강화된 활성을 갖는다.
Patent KR-20000064884-A (KR)
Title: 연료시설용 장치
IPC: F02M69/00
Filed: 1997-12-09
Abstract: 본 발명은 적어도 두 케이싱부재(11, 12)로 구성된 케이싱(10)을 가진 연료시설용 장치에 관한 것으로, 케이싱부재들(11, 12) 사이에는 막장치(14)가 강고하고 밀폐적으로 설치되어있다. 두 케이싱부재(11, 12) 및 막장치(14)를 강고하고 밀폐적으로 결합고정하는 지지영역(40)은 탄성영역(44)을 갖고있고, 따라서 두 케이싱부재(11, 12)의 간단한 스냅결합에 의해 소망하는 확실한 연결이 보장된다.  장치는 특히 연료시설 내 압력의 조정에 이용된다.
Patent KR-20000050868-A (KR)
Inventor: LEE MYUNG WON
IPC: C03B5/18
Filed: 1999-01-15
Abstract: PURPOSE: A stir bar of divided type for a melting material of high temperature is provided not to influence a component of a sample ore melted in high temperature and to stand sufficiently a reaction of high temperature. CONSTITUTION: A stir bar of divided type for a melting material of high temperature comprises : a upper stir bar(110) of a cylinder type made of a stainless alloy steel and including the first connecting part(115) forming a screw groove ; a lower stir bar(120) made of carbon and including the second connecting part(125) forming a screw thread for connecting with a upper stir bar(110) ; a platinum capsule(130) coated on the outer surface of a lower stir bar(120).
Patent KR-20000050898-A (KR)
Inventor: HEO GI JAE
IPC: H01L21/265
Filed: 1999-01-15
Abstract: PURPOSE: A method for fabricating a semiconductor device is to prevent impurity ions in channel formation region within semiconductor substrate from being out-diffused during a subsequent thermal annealing. CONSTITUTION: A method for fabricating a semiconductor device comprises the steps of: etching a semiconductor substrate(11) to define a trench(12A,12B,12C) having a predetermined depth from the surface of the substrate; forming a nitride-treated oxide layer(14) on the substrate including the trench by thermally annealing the substrate in an ambient of NO or N2O. The nitride-treated oxide layer is formed by forming an oxide layer on the whole surface of the semiconductor substrate including the trench and thermally annealing the resultant semiconductor substrate in an ambient of NO or N2O. The nitride-treated oxide can also be formed by implanting nitrogen ions into the oxide layer with a tilt angle.
Patent KR-20000051931-A (KR)
Inventor: SONG YONG
IPC: H01J17/48
Filed: 1999-01-28
Abstract: PURPOSE: A discharge sustain electrode of a plasma display panel is provided to improve the characteristics of the overall white balance by controlling the aperture ratio of a discharge pixel according to each luminance difference of R, G, B phosphor. CONSTITUTION: A discharge sustain electrode of a plasma display panel has a plurality of pixels where a plurality of electrodes are arranged by being crossed each other. And, R, G, B phosphors radiating a visible ray by the discharge between electrodes are allocated in sequence in each pixel. A discharge sustain electrode sustaining discharge on a substrate in one side among two substrate has a hole(10) through which the visible ray passes on a center of each pixel. The hole is made of a metallic material and the hole size is made to be B > R > G according to each allocated phosphor.
Patent KR-19990072594-A (KR)
IPC: H03M13/00
Filed: 1999-02-11
Abstract: 본 발명은, VFO 패턴과 같이, 고정된 복수 비트의 부호화 패턴을 포함하는 기지의 패턴에 연속된 오류 허용 2진 부호화 동기 마크를 개시한다.  부호화 동기 패턴은 고정된 복수 비트 내의 비트 수에 대하여 연속된 기지의 패턴으로부터 최대 해밍 거리에 있다.  오류 허용 동기 마크 또한 역으로 보이는 VFO 패턴에 연속될 수 있고, 동기 패턴도 또한 역으로 보이는 연속된 기지의 VFO 패턴으로부터 최대 해밍 거리에 있다.
Patent KR-20000056293-A (KR)
Inventor: CHOI DONG GYUN
IPC: H04B17/00
Filed: 1999-02-19
Abstract: PURPOSE: A method for examining a trunk line using a modem is provided to independently examine the trunk line only connected with other equipment, and to exactly perceive states and quality of the trunk line regardless of a base station controller(BSC) and service states of the BSC, by using the modem to separate the trunk line with the other equipment. CONSTITUTION: A method for examining a trunk line using a modem comprises the steps of: using the modem between an operator interface and a base station transceiver subsystem(BTS), and connecting the operator interface with the BTS with a public switched telephone network(PSTN); deciding whether the operator interface is finely connected with the BTS, and if so, looping the trunk line; making the operator interface confirm a looped state of the trunk line, and making the BTS generate examining bit patterns to transmit the patterns to the trunk line; making a base station controller(BSC) receive a bit pattern returned before being transmitted, and comparing the returned bit pattern with a bit pattern transmitted to the BTS, then examining the trunk line; transmitting an examined result to the operator interface to connect the looped trunk line into an original state; and making the operator interface cancel a communication connection with the BTS through the modem.
Patent KR-19990078201-A (KR)
Title: 수신기 및 프로그램 갱신 방법
IPC: H04N21/81
Filed: 1999-03-24
Abstract: 방송에 사용되는 수신기는 수신기의 제어 프로그램을 갱신하여 저장하고 그러한 갱신 동안 전력 방해 때문에 제어 프로그램의 손실을 방지하기 위한 간단한 구조로 제공된다. 그 구조는 소거 가능 불휘발성 메모리로 구성한 제 1 저장 수단 및 휘발성 메모리로 구성한 제 2 저장 수단을 포함한다. 그 제어 프로그램은 제 1 저장 수단내에 저장되며 다운로드로 실행되고 제 2 저장 수단내에 제 2 프로그램을 저장한다. 이때 제 2 프로그램은 다운로드로 실행되며 제 1 저장 수단내 제어 프로그램의 최신 버젼을 저장한다.
Patent KR-20000061641-A (KR)
Inventor: KIM CHANG YONG
IPC: B25B5/00
Filed: 1999-03-29
Abstract: PURPOSE: A pallet clamper of a machine tool is provided to balance the pallet by contacting the upper face of a sheet and the lower face of a settlement unit and to prevent the abrasion between two faces while replacing the pallet. CONSTITUTION: An outer diameter(d2) of a protrusion(814) formed in a clamp insertion holder(812) is smaller than an inner diameter(d1) of a holder insertion groove(811). The protrusion is lower than the holder insertion groove. Then, a space(9) is formed between the inner face of the holder insertion groove and the outer face of the clamp insertion holder. The clamp insertion holder of a pallet is inserted into an insertion bracket(711) of a table and an impact given to the clamp insertion holder is absorbed by the space.
Patent KR-20000066371-A (KR)
Title: Motor for rotating horizontal orbit device
Inventor: PAK JONG YULL
IPC: F03G7/00
Filed: 1999-04-15
Abstract: PURPOSE: A motor is provided to generate an electric power without using a fuel by utilizing a lever rotating horizontally. CONSTITUTION: A railway(1) having a radius of 100m and a perimeter of 314m is installed for horizontally rotating a lever, and a bevel gear is rotating centering on a center axis so as to transmit a power to a generator. Then, an external pressure current is applied and a high speed motor car(3) is admitted onto the railway. Two motor cars of 1,000 horse power are arranged at both sides of the level so as to keep a balance. Thus, a large volume of power is generated through the rotation of the lever and is transformed into electrical energy.
Patent KR-19990064671-A (KR)
Title: 오수처리장치
Filed: 1999-04-27
Abstract: 본 발명은 대형 협잡물을 걸러내는 스크린, 유입 오수의 유량을 조절하는 유량조정조 및 유량조정피트, 미생물 접촉재를 포함하는 접촉폭기조, 접촉폭기조에 의해 처리된 처리수내의 부유물질을 제거하는 침전조, 방류조, 침전조에 의해 침전된 고형물을 저장하는 농축조 및 농축조에 저장된 고형물을 농축시키는 농축저류조, 접촉폭기조내에 공기를 공급하는 브로아, 브로아에 의해 공급된 공기를 작게 산포시키는 산기관 및 각각의 처리조 사이의 오수의 이송을 담당하는 이송펌프로 구성된 오수처리장치에 있어서, 상기 접촉폭기조가 체류 시간이 약 22-26 시간 되는 제 1 접촉폭기조와 체류 시간이 1시간 내지 3시간인 제 2 접촉폭기조의 2 단으로 구성되며, 상기 침전조가 제 1 접촉폭기조 다음단에 설치된 제 1 침전조 및 제 2 접촉폭기조 다음단에 설치된 제 2 침전조의 2조로 구성되어 있는 것을 특징으로 하는 오수처리장치에 관한 것으로, 본 발명의 오수처리장치는 물리, 화학적 처리장치를 별도로 추가하지 않고도 처리수 BOD 및 SS가 각각 5ppm 이하가 되도록 고효율로 오수처리를 행할 수 있는 이점을 갖는다.
Patent KR-20000073525-A (KR)
Inventor: PARK YEON SOO
IPC: F16K21/00
Filed: 1999-05-06
Abstract: PURPOSE: A valve application method for a non-powered equipment is provided to automatically open and close a tap water supply, to prevent water from leaking in a handle, to enhance the efficiency of water supply, to improve the quality of tap water and to supply water of a certain amount or stop water supply periodically. CONSTITUTION: A water pressure of an elbow(386) falls due to the supply of water to a hose(381). A piston(407) and water in a cylinder(388) are pushed out by the air compressed in a compressing chamber(389) and the water is drained via a water supply and drain path(387). Herein, the piston, a permanent magnet(411) and an L-shaped iron plate(412) descend. Even if the permanent magnet is spaced apart from another permanent magnet(375), a valve(373) is sustained in an open state. If the iron plate is spaced apart from the permanent magnet(375), the permanent magnet(375) is separated from the iron plate and returned to its original position by the water pressure applied on the valve and the elasticity of a spring(383). Finally, water supplies stops by the valve closure.
Patent KR-20000074048-A (KR)
Inventor: KIM GOENG SIK
IPC: H05K3/42
Filed: 1999-05-18
Abstract: PURPOSE: A method of making a printed circuit board is provided to be capable of rapidly forming a via hole by processing an insulation layer by use of CO2 laser. CONSTITUTION: A method of making a printed circuit board comprises forming circuits(103a) at both sides by etching copper foils of both sides of a copper foil stack plate(101a). The first and second adhesion layers(101b,101c) are formed by depositing an insulation material on both sides of the copper foil stack plate(101a). A copper foil is adhered on a resultant structure. Circuits(103c,103d) are formed by applying an agent to the copper foil. At forming the circuit(103c,103d), the first to third open regions(121a,122a,128a) are formed by removing regions where via holes for the first and second adhesion layers(101b,101c) are to be formed. The first and second adhesion layers(101b,101c) are processed by irradiating CO2 layer to the first and second open regions(121a,122a), respectively.