baber/WOPTO huggingface dataset:
Patent KR-20000044442-A (KR)
Title: Variable vibrator of wireless terminal
Inventor: JO GANG HYEON
IPC: H04B1/38
Filed: 1998-12-30
Abstract: PURPOSE: A variable vibrator of a wireless terminal is provided to control a class of vibration, according to an operator's ask, by varying and supplying power in a vibration generator by use of a variable power supplier. CONSTITUTION: A variable vibrator of a wireless terminal comprises a battery(120), a variable power supplier(130), a vibration generator(140), and a controller(100). The battery(120) supplies power in the vibration generator(140). The variable power supplier(130) varies and supplies the power output from the battery(120), according to a predetermined control, with the vibration generator(140). The supplier(130) comprises a converter(131), a plurality of regulators(132,133,144,145), and a multiplexer(146). The converter(131) has an input circuit, which inputs the power supplied from the battery(120), and a plurality of output circuits, outputting the inputted power into the plurality of output circuit by converting direct current to direct current at least over two classes of voltage. The plurality of regulator(132,133,144,145) rectifies the power output by being connected with the plurality of output circuit separately. The multiplexer(146) supplies power with the vibration generator(140) by deciding one of the input circuit, according to a controlling signal of the controller(100), with the input circuit connected to the output circuit of the regulator(132,133,144,145) separately. The vibration generator(140) generates vibration by the variable power supplied from the variable power supplier(130). The controller(100) varies and generates the class of vibration, by supplying the variable power with the vibration generator(140), through the variable power supplier(130) in correspond to an operator's ask.
Patent KR-19990036430-A (KR)
IPC: C08F110/02
Filed: 1996-08-08
Abstract: A high clarity film containing three layers wherein the polymer of each outer layer is the same or different polyethylene selected from polyethylenes having a density of at least 0.925 g/cc, and a molecular weight distribution of less than 4, and being further characterized by being substantially free of branches having 6 or more carbon atoms, polyethylenes of the outer layers optionally containing a fluoroelastomer.
Patent KR-19990067251-A (KR)
Title: 저융점 도기 복합물 및 이를 이용한 보철 키트, 및 그 사용방법
IPC: A61K6/02
Filed: 1997-02-19
Abstract: 저융점 도기 복합체, 이를 금속 또는 세라믹 기질 상에 이용하여 치과 보철물 및 그 키트들을 제조하는 방법에 대한 것임. 본 발명의 복합체는 800℃ 이하의 융점을 가지며 금속 또는 세라믹 기질과 조화될 수 있는 열팽창계수를 갖는다. 각각의 복합체는 중량비 40 내지 65%의 SiO 2 , 중량비 6 내지 12%의 Al 2 O 3 , 중량비 6 내지 12%의 Na 2 O, 중량비 5.5 내지 10.5%의 K 2 O, 중량비 1 내지 3%의 Li 2 O, 중량비 0.8 내지 2.5%의 CaO, 중량비 0.5 내지 4%의 B 2 O 3 및 중량비 0.1 내지 0.8%의 CeO 2 로 구성된다. 
     로탁산 및 슈도로탁산, 이들을 제조하기 위한 방법, 이들의 제조 과정 중의 중간체, 및 양이온의 접촉시에 발생하는 색상 흡수 변화를 근거로 하여 이들을 사용하는 센서에 대한 것이다.
Patent KR-20000064511-A (KR)
Title: 자기디스크카트리지및자기디스크구동시스템
IPC: G11B17/04
Filed: 1996-12-13
Abstract: 본 발명은 자기 헤드가 자기 디스크와 접촉하기 전에 작은 용량 자기 디스크 카트리지용 디스크 구동 시스템에 삽입되는 것을 방지하기 위한 자기 디스크 카트리지에 관한 것이다.  큰 용량 자기 디스크(12)는 케이스(10)에 회전에 알맞게 수납된다.  케이스(10)에는 정면변부와 일측변부 사이의 정면코너에 제 1절단부(15)가 제공된다.  제 1절단부(15)는 오방향으로의 작은 용량 자기 디스크 카트리지의 삽입을 방지하기 위해 작은 용량 자기 디스크 카트리지에 있는 것과 같다.  제 1절단부(15)와 결합되어 변위되는 작은 디스크 구동 시스템과 결합하기에 적합한 제 2절단부(16)는 케이스의 일측변부에 형성된다.
Patent KR-19990082531-A (KR)
Title: 폴리올레핀계 수지 발포입자 및 그 제조방법
IPC: C08J9/18
Filed: 1997-06-11
Abstract: 폴리올레핀계 수지 발포입자를 제조함에 있어서, 발포배율이 높은 발포입자를 얻고자 하면, 기포직경이 불균일한 발포입자가 제조된다는 문제가 있었다.     이 발포입자를 사용하여 성형된 성형체는 치수안정성이 떨어지고, 또한 표면상태가 불균일해진다는 결점을 발생시켰다. 
     본 발명은 폴리올레핀계 수지를 기재수지로 하는 발포입자로서, 기재수지에 붕산금속염 (단, 알칼리금속염을 제외함) 을 그 함유량이 50 ∼ 50,000 ppm 으로 되도록 함유시켜 이루어지는 것이다.     붕산금속염으로서는 붕산아연, 붕산마그네슘 등이 사용된다. 
     붕산금속염을 함유시킨 폴리올레핀계 수지를 사용하여 수지입자를 만들고, 이 수지입자를 밀폐용기내에서 분산매에 분산시킴과 동시에 발포제를 수지입자에 함유시키고, 가열가압분위기하로 유지한 후, 용기내보다 저압의 분위기로 수지입자를 분산매와 함께 방출하여 수지입자를 발포시켜 발포입자를 얻는다.
Patent KR-20000022404-A (KR)
Title: Additive composition
Inventor: BINGLEY MICHAEL STANLEY
IPC: C10L10/08
Filed: 1997-07-01
Abstract: PURPOSE: An additive composition is disclosed, which improves internal combustion engines efficiency and performance without adding lead. CONSTITUTION: An additive composition for use in internal combustion engines and which can be added to the fuel or lubricating oil comprises a silicone oil and an organic titanium compound such as an organic titanate, optionally with a solvent and lubricating oil, the additive composition reduces valve and valve gear wear with lead free fuels, improves exhaust emission quality and decreases engine wear.
Patent KR-20000022561-A (KR)
Title: Veterinary use of a pleuromutilin derivative
Inventor: BURCH DAVID GEORGE SIDNEY
IPC: A61K31/22
Filed: 1997-07-03
Abstract: PURPOSE: A use of pleuromutilin derivative to the therapy of veterinary diseases, the expression of which is enhanced by increasing stocking density. CONSTITUTION: A pleuromutilin derivative is used to the therapy of veterinary diseases, and the compound is £14-O-£1-£R|-2-amino-3-methyl butyril amino|-2-methyl propane-2-iltio acetyl|.
Patent KR-20000050625-A (KR)
Inventor: KIM KYUNG HYUN
IPC: F41J9/00
Filed: 1999-01-12
Abstract: PURPOSE: An automatic target setting apparatus for use of shooting train is provided to achieve an improved training feature while arranging the target to operate as if in an actual condition. CONSTITUTION: An apparatus comprises a base(10) shaped as a hollow square and has at a top surface thereof a guide slot; a horizontal movement device(20) having rails(21, 21'), screw shaft, an induction motor(23) for rotating the screw shaft, and a moving board(24) installed via rails(21, 21') and the screw shaft, the board(24) having at a lower end thereof a hole(24a) for coupling with rails(21, 21') and a hole for a screw-coupling with the screw shaft; a vertical movement device(30) having an induction motor(31) disposed at a lower end of the board(24), a screw shaft(32) connected to the motor(31) and which is installed upright on the board(24), a moving member(33) screw-coupled by the shaft(32) and which moves vertically, a target establishing rod(34) installed vertically via the member(33), and a guide cylinder(36) having at an outer wall thereof a guide groove for a vertical movement of the member(33), the member(33) having a guide pin(33a) to be inserted into the guide groove of the cylinder(36), and a cover plate(37) installed on the top of the cylinder(36) and which is supported by the shaft(32) and has an arc groove for a guidance of the rod(34); and a controller for controlling the above devices.
Patent KR-20000056001-A (KR)
Inventor: JEONG JONG SAM
IPC: G11B7/131
Filed: 1999-02-12
Abstract: PURPOSE: An optical pickup device for reducing crosstalks caused by a neighboring track is provided to record information signals without deteriorating optical efficiency of an optical spot in a main track, by detecting the information signals of the main track having lower crosstalks in real time. CONSTITUTION: An optical pickup device for reducing crosstalks caused by a neighboring track comprises an optical detector(8) and an arithmetic operator(20). The optical detector is composed of a main light receiver(A) and sub light receivers(B,C). The main light receiver receives light of a center of an incident light. The sub light receivers receive incident light of a peripheral part. The arithmetic operator arithmetically operates a detecting signal(A) of the center and detecting signals(B,C) of the peripheral part, to remove crosstalks caused by a neighboring track included in a main track signal in a recorded medium. The operator is composed of a first adder(21), a multiplier(23), and a second adder(25). The first adder adds signals optically converted and outputted from the sub light receivers. The multiplier multiplies signals of the first adder by an operating invariable number. The second adder adds a signal optically converted in the main light receiver to a signal of the multiplier.
Patent KR-19990072688-A (KR)
Title: 용접와이어및그제조방법
IPC: B23K9/09
Filed: 1999-02-13
Abstract: 본 발명은 아크 용접 공정에 사용되는 와이어 및 그것의 제조 방법에 관한 것으로, 이러한 와이어는 유효 외경을 가지며, 선택된 체적을 각각 갖는 일련의 개별 세그먼트로 형성되고 상호 연결 브릿지 요소에 의해 서로 연결된 소정 길이의 중실형 금속을 포함하며, 상기 세그먼트에서의 중실형 금속의 단면적은 상기 브릿지 요소에서의 상기 중실형 금속의 단면적 보다 더 크게 구성되어 있다.
Patent KR-19990046385-A (KR)
Title: 에프알피(에스엠시트.합성수지+유리섬유)스크랩.폐기물재활용
Filed: 1999-03-04
Abstract: 폐기물을 재활용함으로써 외화를 절감할수 있으며 국민의 환경으로부터 삶의질을 높일수 있다. 
     또한 목재 대체 원료화 함으로 가구류를 만드는데 제조원가 경제적 향상을 기여할수 있음
Patent KR-19990045987-A (KR)
Title: 마늘절단기
Filed: 1999-03-05
Abstract: 본 발명은 백합과의 다년초식물인 마늘 또는 양파의 인경(鱗莖)을 줄기와 자동으로 절단시키는 마늘절단기에 관한 것이다. 
     이러한 본 발명은 마늘 또는 양파를 올려 놓으면 인경의 선단이 맞추어지며 하향이동시키는 정렬수단과, 상기 정렬수단의 하부일측에 설치되어 인경을 하부로 밀어주는 누름수단과, 상기 정렬수단의 하부에 설치되고 누름수단에 의해 눌려지는 인경을 절단하는 회전톱과, 상기 정렬수단과 누름수단 및 회전톱에 동력을 전달하는 동력전달수단을 구비시킴으로써 이루어진다.
Patent KR-20000059659-A (KR)
Inventor: JO CHUN SUN
IPC: G01L3/00
Filed: 1999-03-06
Abstract: PURPOSE: An AC brake type dynamometer for education is provided to compare and analyze a velocity and torque of a motor by displaying repulsive force generated when providing DC magnetized power supply to a dynamometer connected to the motor by a coupling ring with digital numbers. CONSTITUTION: An AC brake type dynamometer for education includes a motor(20) for rotating by the AC from a power supply system(11), a dynamometer(50) for generating brake force by receiving DC magnetized variable power supply, a coupling ring(30) for connecting respective rotation shafts of the motor and the dynamometer, a velocity detector(80) for detecting a rotation velocity of the coupling ring, a velocity output element(90) for outputting the detection result of the velocity detector, a torque detector(60) for detecting a torque of the dynamometer, a torque output element(70) for outputting the detection result of the torque detector, and an interface(100) to be applied with information from the power supply system, the velocity detector and the torque detector for outputting to a computer(200).
Patent KR-20000061488-A (KR)
Inventor: KIM IN HUN
IPC: H04N5/44
Filed: 1999-03-26
Abstract: PURPOSE: A method for automatically searching channels of a TV set, is provided to display a channel searching process through the changes of color for channel numbers in a channel list, to discriminate channels having broadcast signals by using the changes of color and the logos of corresponding broadcasting stations, and to display the channel list and the image of a channel under search, so that a user can recognize channels visually. CONSTITUTION: A channel list is displayed according to a user's command for automatic channel search. A search is performed in numerical order from the channel list. Based upon the channel list, a display operation is performed to discriminate between channel numbers having broadcast signals and channel numbers without broadcast signals. When performing the search in numerical order, the image of a channel under search is displayed on one side of the channel list. When displaying channel numbers, corresponding numbers are displayed in different colors from the channel numbers without broadcast signals. The corresponding numbers are displayed in different colors according to analog/digital channels. On one side of the channels performing the display operations, the logos of corresponding broadcasting stations are displayed
Patent KR-20000065972-A (KR)
Inventor: CHANG HYUN SOO
IPC: D07B3/00
Filed: 1999-04-12
Abstract: PURPOSE: A device and method for manufacturing string is provided to improve the productivity by improving a working condition and to standardize products by making strings of uniform thickness. CONSTITUTION: A device for manufacturing string includes an upper frame(10) and a lower frame(20) assembled with each other to support the whole device, a rotary frame body(31) standing vertically on the upper frame in a rotatable manner, a plurality of forge supplying frame(30) detachably mounted inside the rotary frame and having a forge supplying drum(32) for supplying forge downwardly, a forge string cast(40) mounted inside the rotary frame body and twisting the forge, a winding means(50) for winding the string in the form of a cylinder, and a driving means(60) for transmitting driving power to the forge supplying frame and the winding means.
Patent KR-19990046769-A (KR)
Title: 카세트테이프플레이어가구비되는컴퓨터시스템및그신호재생방법
Filed: 1999-04-23
Abstract: 본 발명은 카세트 테이프가 동작되도록 카세트 테이프 플레이어가 구비되는 컴퓨터 시스템에 관한 것으로서 본 발명은 소정의 위치에서 전원커넥터와 버스커넥터가 연결됨에 의하여 FDD, 콤팩트 디스크 등의 입출력장치들이 구비되는 컴퓨터 시스템에 있어서, 상기 전원커넥터를 통하여 전원을 공급받아서 투입되는 카세트 테이프로부터 신호가 독취되거나 또는 상기 컴퓨터 시스템의 신호를 상기 카세트 테이프로 공급하도록 동작되며, 상기 신호가 상기 버스커넥터를 통하여 상기 컴퓨터 시스템과 교환되는 플레이어를 포함하는 것을 특징으로 한다. 이에 따라서 카세트 테이프 플레이어가 컴퓨터 시스템에 구비되기 때문에 별도의 오디오 전용 플레이어 없이 컴퓨터 시스템에서 오디오신호가 재생되거나 저장되는 플레이어로 사용될 수 있는 장점이 있다.
Patent KR-20000067654-A (KR)
Inventor: KANG SEONG U
IPC: C08L9/00
Filed: 1999-04-30
Abstract: PURPOSE: A thermoplastic resin composition obtained by blending ABS resin without using α-methylene and N-phenylmaleimide as a major cause material of a thermal decomposition in place of conventional heat resistant ABS resin with a polycarbonate resin having excellent heat resistance is provided which has improved adhesion strength and plating characteristics. CONSTITUTION: The thermoplastic resin composition comprises 30 to 50% by weight of a graft copolymer (A) obtained by graft copolymerization of 30 to 70% by weight of conjugated rubber, 20 to 40% by weight of aromatic vinyl and 10 to 30% by weight of cyanide vinyl; 10 to 20% by weight of a copolymer (B) comprising 60 to 80% by weight of aromatic vinyl and 20 to 40% by weight of cyanide vinyl; and 30 to 55% by weight of polycarbonate resin. The composition has high heat deflection temperature such that it has excellent plating characteristics.
Patent KR-20000047397-A (KR)
Inventor: SO YONG CHEOL
IPC: H04B1/034
Filed: 1999-05-10
Abstract: PURPOSE: A hands free device for a vehicle in the portable telephone is provided so that a user can freely make a phone call through a car audio without the necessity of using his hands when he wants to use a portable telephone while driving. CONSTITUTION: A hands free device(200) is composed of a connector(210), a microphone(220) and a cigar jack(230). The connector(210) is connected to an earphone jack(110) formed at a portable telephone(100). The microphone(220) converts a user's voice signal into an electrical signal. The cigar jack(230) is provided with an FM transmitter(231) to transmit a companion's voice signal to a car audio(300) through an antenna(232) so that the companion's voice signal supplied from the portable telephone(100) can be outputted to a speaker(400).
Patent KR-19990088504-A (KR)
Title: 박막트랜지스터및그제조방법
IPC: H01L29/49
Filed: 1999-05-24
Abstract: 본 발명의 목적은, (1) 근래의 대형이며 또한 화소밀도가 높은 대형 액정패널 등에 사용되는 작은 박막트랜지스터의 소스 및 드레인전극용의 콘택트홀 형성에 있어서, 에칭부족에 의한 절연막이 남거나 또는 오버에칭에 의한 반도체층의 소실이 발생하는 것을 방지한다. 
     (2) 소스전극, 드레인전극의 반도체층과의 확실한 전기적 접촉을 도모하는 것. 
     이상의 (1)과 (2)에 있다. 
     그것을 위해, (1) 콘택트홀부의 실리콘막을 2층구성 등으로 하여 미리 두껍게 형성한다. 
     (2) 전극금속과 반도체사이에 실리사이드층을 마련한다.
Patent KR-19990064363-A (KR)
Title: 위성방송수신기의 채널상태판별장치
Filed: 1999-05-28
Abstract: 본 발명은 위성방송수신기에 수신되는 각 채널의 전계강도를 측정하고 수신불량의 채널을 미리 TV시청자에게 알려줄 수 있도록하기 위한 장치에 관한 것으로, 	안테나를 통하여 수신되는 위성방송의 각 채널의 전계강도를 측정하기 위한 수신전계강도측정부; 
     상기 수신전계강도측정부에서 측정된 각 채널의 수신전계강도와, TV시청을 위한 최소 수신전계강도가 저장되는 ROM; 
     상기 ROM에 저장된 상기 각 채널의 수신전계강도와, 상기 최소 수신전계강도를 비교 판단하기 수신전계강도 판별수단; 
     TV화면상에 문자나 화상을 입력시키기 위한 O.S.D(On Screen Display); 
     입력부의 신호에 따라 상기 ROM에 저장된 각 채널의 수신전계강도와 상기 최소 수신전계강도를 상기 수신전계강도 판별수단에서 각 채널의 수신상태를 판별토록 하여, 수신양호한 채널에 대한 정보를 상기 O.S.D에 의하여 TV화면상에 표시하도록 하는 제어부로 구성된다.
Patent KR-20010005195-A (KR)
Inventor: KIM DONG YEONG
IPC: A61K8/97
Filed: 1999-06-30
Abstract: PURPOSE: A method of preparing cacao bean husk fraction having polyphenol is provided, which elevates an anticariogenic potential by increasing activity inhibition on glucosyltransferase and improves an economically usefulness by recycling of cacao bean husk. CONSTITUTION: A method of preparing cacao bean husk fraction comprises the following steps of: adding 4 to 10wt. of 50% acetone solution to dried cacao bean husk 1wt.; agitated extracting at 40 to 70 deg.C for 4 to 6 hr. and condensing two times; filling it at styrene absorbent resin; washing with 1 to 2 wt. of 20% ethanol; and then solvent fractionating with adding 1 to 2 wt. of 50% ethanol.
Patent KR-20010008566-A (KR)
Inventor: OH WAN SEOK
IPC: H01M2/04
Filed: 1999-07-02
Abstract: PURPOSE: A cap assembly of a secondary cell is provided to enhance welding qualities and sealing features with a can by compensating the deformation of a cap plate due to the coupling force of an electrode rivet. CONSTITUTION: A cap plate(80) of a cap assembly(60) is manufactured to have a through hole(82) and a recess(84) through a metal rolling or a die casting using aluminium or an aluminium alloy. An insulating plate(10) and a gasket(12) are inserted in the inner periphery and the outer surface of the through hole(82), and an electrode connection plate(16) is inserted in the lower part of the gasket(12), in which an electrode rivet(14) is inserted, and then a clasp and seal process is performed to construct the cap assembly(60). The cap plate(80) is deformed while being pressed by the electrode rivet(14) along the periphery of an area pressed by the rivet(14), and thus pushed in the horizontal direction to be aligned with extended lines in both sides.
Patent KR-20010009334-A (KR)
Inventor: PARK TAE SEONG
IPC: H01L21/60
Filed: 1999-07-09
Abstract: PURPOSE: A semiconductor chip package and a method for making the same are provided to enhance a production yield by achieving an interconnection of all leads at one time, form connection lines from an upper part of each bonding pad to a predetermined part of the semiconductor chip, and integrates the connection lines with leads as one body. CONSTITUTION: Many bonding pads are formed in a length direction. An insulation layer is formed on the remaining part except the bonding pad forming part. The connection lines(130) are extended from an upper part of the bonding pads(115) to a width direction edge part, and are connected to the bonding pads. Many leads(150) are electrically connected to the bonding pads in the medium of the connection line. A sealing part covers the semiconductor chip(110) and a predetermined part of the leads. The leads and the connection lines are mutually connected by a conductive adhesive tape. The leads and the connection lines are mutually welded by an ultrasonic sound. Thereby, the semiconductor chip package enhances a production yield by achieving an interconnection of all leads at one time.
Patent KR-20010026166-A (KR)
Inventor: DO GI SEONG
IPC: H01L21/68
Filed: 1999-09-03
Abstract: PURPOSE: A carrier box for a wafer carrier is provided not only to prevent the production of particles caused by friction between the wafer carrier and the carrier box but also to prevent the influx of outside particles into the carrier box due to discrepancy in atmospheric pressure. CONSTITUTION: The carrier box includes a lower case(12) for containing the wafer carrier(11) and an upper case(13) covering the lower case(12). The lower case(12) is open to the upside, and the upper case(13) is open to the downside. Semiconductor wafers are contained in the wafer carrier(11). The carrier box further includes a supporting part(14) formed on an upper interior surface of the upper case(13) to press the wafer carrier(11), so that the wafer carrier(11) is prevented from shaking and thereby undesirable particles by friction are not produced. Also, the carrier box has an air vent(15) formed on either side thereof to equilibrate atmospheric pressure inside the carrier box with outside.
Patent KR-20000023177-A (KR)
Inventor: NOBUKATA HIROMI
IPC: G11C16/04
Filed: 1999-09-15
Abstract: PURPOSE: A non volatile semiconductor memory device is provided to prevent an increment of a circuit scale when storing multi-value data to a memory cell. CONSTITUTION: In a non volatile semiconductor memory device, a plurality of latchcircuits(LQ1,LQ2) simultaneously latch write data at writing, and are set with predetermined data when data is sufficiently written at verifying. Read data is set at the latch circuits of the plurality at reading. A write controller(23) sets bit line voltages according to the data latched in the latch circuits at writing. A verify controller(23) sets a word line voltage according to a distribution state of a threshold voltage at verifying, and secures the latch circuits according to whether a threshold voltage of a memory cell exceeds a voltage applied to the word line. The verify controller(23) controls such that predetermined data is set in the latch circuits when data is sufficiently written at verifying. A read controller(23) sets a word line voltage according to a distribution state of a threshold voltage at reading, and secures the latch circuits according to whether a threshold voltage of a memory cell exceeds a voltage applied to the word line.
Patent KR-20010027864-A (KR)
Inventor: KIM MYEONG O
IPC: G11C29/00
Filed: 1999-09-16
Abstract: PURPOSE: A memory device is provided to reduce a testing time using a data input/output pin efficiently. CONSTITUTION: The memory device responding first and second edges of a clock signal and then inputting/outputting a data includes first and second array blocks(102,104,106,108) providing first and second input/output lines(100_E-103_E,104_E-107_E) in both sides and a data writing circuit(120) which writes a specific data to the first and second array blocks. When a normal writing operation is performed, the data writing circuit writes a data through the first and second input/output lines positioned to both sides of the first array block in response to the first edge of the clock signal and a data through the first and second input/output lines positioned to both sides of the second array block in response to the second edge of the clock signal. When a write operation for a package parallel bit test is performed, the data writing circuit writes a data through the first input/output lines positioned to one side of the first and second array blocks in response to the first edge of the clock signal and a data through the second input/output lines positioned to other side of the first and second array blocks in response to the second edge of the clock signal.
Patent KR-20010028235-A (KR)
Inventor: KIM DO HYEONG
IPC: H01L21/28
Filed: 1999-09-20
Abstract: PURPOSE: A method of forming a contact is to increase size of an opening portion on a contact hole, thereby improving a step coverage in a subsequent metal deposition process and implementing a low-resistant metal contact. CONSTITUTION: The first BPSG(borophosphosilicate glass) layer(180,220,280) is deposited on a semiconductor substrate(100) including a contact area and is reflowed to planarize an upper surface thereof. The second BPSG layer(260) is then deposited on the planarized first BPSG layer. The second BPSG layer and the planarized first BPSG layer are anisotropically etched to form a contact hole(280) exposing the contact area. As the second BPSG layer has not been reflowed at a high temperature, it has a higher etch rate compared to that of the first BPSG layer, thus developing a profile having a widened contact opening.
Patent KR-20000000263-A (KR)
Inventor: PARK IL UI
IPC: G06F3/02
Filed: 1999-10-02
Abstract: PURPOSE: A keyboard is provided to prevent contamination and improve the convenience of usage CONSTITUTION: In the keyboard, the gaps of each keys are covered with a key settler, a monolithic membrane, made of soft, flexible and transparent materials such as synthetic rubber or synthetic resin and formed by injection molding so that the gaps between the keys can be protected from the humidity, particles and the other sources of contamination. Each key is composed of key top, key top pin having plunger on its top and pin settler fit to key top and having a hole through which the pin moves up and down, The keys are settled improved key settler which is formed monolithically and has holes corresponding to the keys.