baber/WOPTO huggingface dataset:
Patent KR-19990084236-A (KR)
Title: 트랙터용 쟁기
Filed: 1998-05-01
Abstract: 본 발명은 다수의 보습날이 결합되는 쟁기를 좌우로 가변조정시킬 수 있도록 함은 물론 트랙터에 쟁기를 장착시킨 상태에서 도로를 주행하는 경우에는 쟁기의 폭을 최소로 줄일 수 있게 하여 트랙터의 도로주행에 장애를 주지 않토록 하는 트랙터용 쟁기를 제공하기 위한 것이다. 
     종래에 있어서의 트랙터용 쟁기는 쟁기의 전체폭을 가변시킬 수 없어 트랙터가 농로 및 일반도로를 주행하는 경우 트랙터에 결합된 쟁기의 폭이 넓어 도로 주행에 많은 위험성을 내포하고 있었던 바, 본 발명은 트렉터의 후면에 연결되는 브라켓장치(1)에 가이드레일(10)을 설치시키고, 상기 가이드레일(10)에 실린더장치(2)에 의하여 좌우로 이동되는 슬라이드(20)를 설치시키며, 상기 슬라이드(20)의 일측에 다수의 보습날(30)이 결합되는 프레임(3)을 힌지축(40)으로 연결시켜 프레임(3)이 회동가능하게 하고, 상기 슬라이드(20)와 프레임(3)의 사이에 프레임(3)의 회동동작을 제어하는 실린더장치(5)를 설치시켜 구성함으로서, 밭둑에 근접한 짜투리 경작지의 작업을 편리하게 이룰 수 있는 효과가 있고, 쟁기를 장착한 상태에서 트랙터가 도로를 주행하는 경우에는 쟁기의 폭을 최소화시킨 상태에서 주행할 수 있어 안전사고를 미연에 방지할 수 있는 효과가 있는 것임.
Patent KR-19990084367-A (KR)
Title: 고령토와 시멘트를 혼합하여 고강도 스페이서를제조하는 방법
Filed: 1998-05-06
Abstract: 본 발명은 열처리한 고령토를 주재로 사용하여 시멘트와 일정비율로 혼합하고 압출기를 이용하여 건축물 시공시 철근을 배근하는데 사용하는 스페이서(Sapcer)를 제조하는 것을 특징으로 하고 있다. 
     고령토는 국내 하동 및 산청에서 산출하는 저품위인 white-D급과 pink-C급을 사용하여 시멘트와의 수화반응성을 촉진시키기 위하여 고온에서 열처리하여 메타카올린(metakaoline)을 제조하고 평균입도가 20㎛가 되도록 분쇄한다. 이렇게 제조된 고령토를 시멘트와 혼합하여 30㎏/㎠ 이상의 압력으로 일정 형태를 갖도록 압출시키고 상온 기건양생시키면 3일 압축강도 300㎏/㎠ 이상을 획득할 수 있는 제조방법을 특징으로 한다.
Patent KR-19990084752-A (KR)
Title: 반도체소자 검사중에 핸들러 온도를 체크하는 방법
IPC: G01R31/28
Filed: 1998-05-11
Abstract: 본 발명은 반도체소자를 검사하는 도중에 핸들러의 온도를 반복적으로 체크해서 현재의 검사공정에 적합치 않은 온도조건이라고 판단되면 검사를 중단시키고 온도조건이 적합할 때에만 검사를 진행하는 반도체소자 검사방법이다. 상기 핸들러 온도체크 단계는 1) 미리 입력되어 있는 핸들러 기준온도값과 온도범위를 인출하는 단계, 2) 핸들러 GPIB의 번지를 인출 및 설정하는 단계, 3) 핸들러에 물려있는 반도체소자가 있는가의 상태를 읽어 핸들러가 현재 동작중인지 판단하는 단계, 4) 핸들러의 모델명과 버전을 확인하는 단계, 5) 핸들러에서 측정한 현재의 온도를 읽는 단계, 6) 읽은 온도를 핸들러의 모델명과 버전에 따라 실제 연산할 수 있도록 데이터변환하는 단계, 7) 변환된 온도데이터가 상기 단계에서 인출한 기준온도범위 내에 드는지 판정하는 단계, 8) 핸들러의 온도가 설정된 온도범위 내에 들지 않으면 현재 동작중인 핸들러를 정지시켜 반도체검사를 중단시키고 온도범위내에 들면 본검사를 속행하는 단계를 포함한다.
Patent KR-19990084852-A (KR)
Title: 전계 효과 트랜지스터
IPC: H01L29/78
Filed: 1998-05-12
Abstract: 본 발명의 전계 효과 트랜지스터는 n + 소오스 영역과 채널 사이, 채널과 n + 드레인 영역 사이에 하이 도프트 채널 영역을 형성하여 캐리어의 흐름 경로를 변경시켜 입출력 특성상의 선형성을 향상시키도록 하기 위한 것으로서, 제 1 도전형 기판과, 상기 제 1 도전형 기판 위의 소정 영역에 형성되는 게이트 산화막과, 상기 게이트 산화막 위에 형성되는 게이트 전극과, 상기 게이트 전극 양측의 제 1 도전형 기판 위에 형성되는 소오스/드레인 전극과, 상기 소오스/드레인 전극 하부의 제 1 도전형 기판 표면내에 각각 형성되는 제 2 도전형 불순물 영역과, 상기 게이트 전극과 소오스/드레인 전극 사이의 제 1 도전형 기판 표면내에 형성되는 상기 제 1 도전형 기판보다 고농도의 제 1 도전형 불순물 영역으로 이루어짐에 그 요지가 있다.
Patent KR-19990086493-A (KR)
Title: 비트선 분리 프리차아지 회로를 가지는 반도체 메모리 장치
Filed: 1998-05-28
Abstract: 비트선 분리 프리차아지 회로를 가지는 반도체 메모리 장치와 프리차아지 해제 방법이 개시된다. 
     본 발명의 비트선 분리 프리차아지 회로를 가지는 반도체 메모리 장치는 행들과 열들에 배열되는 복수개의 메모리 셀들을 가지는 반도체 메모리 장치에 있어서, 행들 중의 하나의 행을 선택하여 복수개의 워드라인들; 제1 타이밍 구간에서, 워드라인들에 의하여 선택되는 행의 메모리 셀들 중에, 열선택신호에 의하여 선택되는 하나의 열에 연결되는 메모리 셀의 데이터가 출력되는 비트선과, 선택되는 메모리 셀과 인접한 열과 연결되는 상보비트선으로 구성되는 복수개의 비트선쌍들; 제1 타이밍 구간 전의 제2 타이밍 구간에서, 제1 프리차아지 신호의 활성에 의하여 비트선에, 제2 프리차아지 신호의 활성에 의하여 상보 비트선에 기준전압을 공급하는 프리차아지부; 감지 구동 신호에 의하여 인에이블되며, 제1 타이밍 구간 후의 제3 타이밍 구간에서 비트선과 상보 비트선의 전압차이를 감지하여 증폭하는 감지증폭기; 제1 및 제2 프리차아지 신호를 발생하는 프리차아지 신호 발생부를 구비하며, 제1 타이밍 구간에서 제1 프리차아지 신호가 비활성되고, 일정시간이 경과한 후 감지 구동 신호가 인에이블되기 전에 상기 제2 프리차아지 신호가 비활성된다.
Patent KR-20000001482-A (KR)
Title: Optical recording media
Inventor: BAE GEUN TAEK
IPC: G11B7/241
Filed: 1998-06-11
Abstract: PURPOSE: A bleeder optical recording media is described, which has improved light resistance and high transmittance to lengthen storage life. CONSTITUTION: The media comprises a reflection layer, a protection layer, and a recording layer, wherein the reflection layer and a protection layer are sequentially formed on the recording layer, including an organic pigment, formed on a substrate including a colorant. Laser wave length, which is used to read information recorded on the media, can sufficiently permeate the substrate including a colorant while a light within a range of wave length capable of dissolving the organic pigment on the recording layer is shut off, improving light resistance of an optic recording media and lengthening storage life.
Patent KR-20000003724-A (KR)
Title: Semiconductor device having spacer and anti-reflective cap and method thereof and method for manufacturing photoresist using them
Inventor: KIM IN SUNG
IPC: H01L31/0232
Filed: 1998-06-29
Abstract: PURPOSE: A semiconductor device is provided to prevent effectively reflection of light from a reflective pattern. CONSTITUTION: The semiconductor device comprises: a semiconductor substrate(100); a reflective pattern(104p, 106p) formed on the semiconductor device; an anti-reflective cap(110p) formed on the reflective pattern; and an anti-reflective spacer(130s) formed on a side wall of the reflective pattern. The anti-reflective cap(110p) functions as a interference type anti-reflective film reducing below 20% a reflection ratio by offsetting a reflection light reflected from the reflective pattern surface and a light reflected from the anti-reflective cap surface out of a light input from an upper area of the anti-reflective cap.
Patent KR-20000004469-A (KR)
Title: Radiation apparatus of electronic manufactures
Inventor: HONG SUN KYO
IPC: H05K7/20
Filed: 1998-06-30
Abstract: PURPOSE: A radiation apparatus of electronic manufactures is provided to radiate heat by absorbing heat generated in chip of electronic manufactures. CONSTITUTION: The apparatus comprises radiation plate prepared in a electronic manufactures and heat transfer member for radiating heat by transmitting the heat to the radiation plate, the heat transfer member including support portion and diamond like carbon(DLC) layer formed coating on the support portion for absorbing the heat generated in the chip and transmitting the heat to the radiation plate. The diamond like carbon layer formed coating by emboss about the support portion so as to transfer the heat of the chip to the radiation plate.
Patent KR-20000007506-A (KR)
Title: Soldering device
Inventor: MOON YUNG JOON
IPC: B23K1/08
Filed: 1998-07-03
Abstract: PURPOSE: A soldering device is provided to prevent a short which is a connection of two adjacent leads to one even if soldering by using a melted lead in a state of a narrow space between leads. CONSTITUTION: A soldering device comprises:a lead tank(50) filled with a melted lead(PB) to a level for possibly soldering on the PCB substrate(P) by filling to a separating hole(51) of a cover(52); a settling unit(1) settled on the upper face of the cover of the lead tank for the PCB substrate to be settled; a settling plate(2) containing fixing instruments in the both sides of the settling unit for intermittently fixing the PCB substrate; and a raising instrument installed in the both sides of the lead tank for raising the settling plate in a horizontal and an inclined states.
Patent KR-20000008481-A (KR)
Title: Gas cylinder type of height adjuster for chair
Inventor: JEON YONG SANG
IPC: A47C3/30
Filed: 1998-07-14
Abstract: PURPOSE: An adjuster for changing chair height has a piston with an O-ring integrally in insertion to be fitted in a gas cylinder to simplify production process and reduce the cost. CONSTITUTION: The adjuster includes a spindle of cylinder form which has a pipe holder installed on the top part, a piston rod placed underneath the spindle to support it, and a piston fixed to the top of the piston rod and having an O-ring in insertion for sealing the cylinder chamber, the piston having a main body of a cylinder block formed with an inner cylinder hole for receiving the piston rod and the piston also having some elastic ring members integrally fitted round the piston body.
Patent KR-20000008884-A (KR)
Title: Preparation method of waste refractory castable having improved fluidity
Inventor: SON SU HYEON
IPC: C04B35/10
Filed: 1998-07-16
Abstract: PURPOSE: A method for preparing waste refractory castle by mixing crushed waste refractory with an aqueous solution contained acid or a surfactant is provided which is useful for a raw material for interior finishing of runner cover of blast furnace having rust resistance. CONSTITUTION: Graphite or carbon containing acidic and neutral crushed waste refractory as a main raw material is mixed with alumina and cement as a binding agent and added with a solution contained 2-9 weight% of one or two or more sorts of acid such as sulfuric acid, acetic acid or nitric acid or 1-5 weight% of aqueous solution contained one surfactant or composite surfactant to give a waste refractory castable. For an example, a crushed waste refractory is added with 2-9 weight% of three sorts of nitric acid and 1-5 weight% of alkyl benzene to give a final product. Free fluidity, vibration fluidity and hardening property(after curing for 24 hr) of the product are 120 mm, 165 mm and hardening respectively. The product has improved fluidity and uniformity without localization of carbon fine powder.
Patent KR-20000009297-A (KR)
Title: Grill with wheat shape spotted stone and loess radiating far infrared ray
Inventor: HWANG HUI SEOK
IPC: A47J37/07
Filed: 1998-07-23
Abstract: PURPOSE: A grill with a loess and wheat shape spotted stone is provided which radiates far infrared ray, makes the stone to absorb meat oil and makes a good taste meat. CONSTITUTION: A grill frame is constituted with an upper frame(21) and a lower frame(22), which are connected by a hinge(23). Inducing ports(25) which a supporting bar passes through are formed on both sides of the frames(21, 22), respectively. On inner sides of the frames(21, 22), the loess is coated, where the Wheat Shaped Spotted Stones are arranged and net shaped panels(28) are mounted on the Wheat Shaped Spotted Stones. The frames(21, 22) are a stainless container.
Patent KR-20000009494-A (KR)
Title: Dehydroepiandrosterone derivatives for prevention and treatment of osteoporosis
Inventor: PARK SANG CHOL
IPC: C07J1/00
Filed: 1998-07-24
Abstract: PURPOSE: Novel dehydroepiandrosterone derivatives and pharmaceutically acceptable salts thereof are provided which are useful for the treatment and prevention of osteoporosis. CONSTITUTION: Dehydroepiandrosterone derivatives of formula 1 (R is L-aspartate, L-asparagin or pyruvate) are produced by ester linkage between the 3 position of dehydroepiandrosterone, and L-aspartate, L-asparagin or pyruvate. The derivatives shows excellent stability and reduces side effects which are caused by high oxidative stress such as hepatic enlargement.
Patent KR-19990014240-A (KR)
Title: 광섬유 커넥터 페룰을 조립하기 위한 고정구
IPC: G02B6/36
Filed: 1998-07-28
Abstract: 본 발명은 대체로 평행한 복수의 광섬유(22)를 포함하는 광섬유 케이블(20)용 커넥터 페룰(50)을 조립하기 위해 사용되는 고정구(62)에 관한 것이다.  고정구는, 기부(64)를 포함하며, 페룰 본체(52)를 수용하고 적절하게 위치 설정하기 위한 기부 상의 리셉터클(72)이 있다.  페룰 본체에 삽입되는 케이블의 위치를 설정하기 위한 리셉터클(72) 한쪽 기부 상에는 케이블 위치 설정 수단(70)이 제공되며, 리셉터클의 대향측에서 페룰 본체로부터는 광섬유(22)의 노출된 단부가 돌출된다.  서로에 대해 그리고 적절하게 위치 설정된 페룰 본체에 대해 광섬유(22)의 노출된 단부를 정렬시키기 위한 리셉터클(72) 대향쪽 기부 상에는 섬유 정렬 수단(82)이 제공된다.
Patent KR-20000013244-A (KR)
Title: Consecutive reading method and circuit for performance improvement of recording media
Inventor: OH GI HWAN
IPC: G11B19/02
Filed: 1998-08-06
Abstract: PURPOSE: A consecutive reading method is provided to improve an access function by consecutively reading data while reading the data from a recording media. CONSTITUTION: The method comprises the steps of reading data from a recording media according to a reading command transmitted from a host, generating a duplicate reading command when a new reading command to consecutively read data is transmitted from the host while reading the data from the recording media, and consecutively reading the data from the recording media when the duplicate reading command is generated.
Patent KR-20000014513-A (KR)
Title: Charge controller
Inventor: YEON SANG-HEUM
IPC: H02J7/02
Filed: 1998-08-21
Abstract: PURPOSE: A charge controller are provided to prevent non-charge and over charge due to the capacitance difference of a charger and to prevent the damage of the charger in over charging. CONSTITUTION: The charge controller comprises: a DC-DC converter(100) converting input source voltage(Vcc) into the prescribed voltage or current by making it ON/OFF through a switch; a gain controller(200) receiving the current or voltage converted by said DC-DC converter(100) to amplify and output it as much as gain controlled by a user; a pulse width controller(300) comparing said amplified voltage with previously set comparison voltage(Vhys) and varying the duty ratio in accordance with the comparison value to control the switch of said DC-DC converter(100), and comparing the voltage input to below described charging unit(600) in said DC-DC converter(100) to varying the duty ratio in accordance with the comparison value; a charge termination generation indicator(500) generating a charge termination signal if the voltage passed through a low band pass filter(400) is greater than reference voltage to stop the operation of said pulse width controller(300); and a charging unit(600) charging the voltage input through said DC-DC converter(100).
Patent KR-20000015254-A (KR)
Title: Filter net
Inventor: LEE DONG HWA
IPC: B07B1/46
Filed: 1998-08-28
Abstract: PURPOSE: A filter net is provided to promote the intensity and abrasion resistance according to the molding the net by pouring resin and making a mold using reinforcement core materials such as steel rod and steel pieces when manufacturing the net using polyurethane resin. CONSTITUTION: The filter net manufacturing method comprises the steps of: molding in the state of embedding a reinforcement core material(11) into the resin by pouring the resin after placing the reinforcement core material such as steel net and square bodies crosswise in the mold; and filtering pebbles by the contact of the wires when the pebbles are filtered from the upper part of the hole formed on the net body(10) while forming the diameter of upper part of the hole to be smaller than one of the lower part.
Patent KR-19990029890-A (KR)
Title: 광디스크 및 그 재생장치
IPC: G01C21/36
Filed: 1998-09-17
Abstract: 광디스크의 카 네비게이션 파일(116)에는 주행차 유도시에 참조되는 데이터가 기록되어 있고, 비디오 타이틀 세트(118)에는 지도 데이터에 표시된 지역 내의 몇가지 시설에 관한 복수의 영상 타이틀이 기록되어 있다.  이 영상 타이틀의 영상의 1장면을 구성하는 VOB는 고화질의 실사(實寫) 영상이다. 
     VOB에는 재생시에 소정 조작이 행해진 경우, 영상정보에 대응하는 지점의 위치정보를 고쳐쓰기 가능 영역에 기입하게 하는 취지의 기입 커맨드가 기록되어 있기 때문에, 이 기입 커맨드를 디스크 재생장치에 실행시키면 고쳐쓰기 가능 영역에 위치정보를 기입할 수 있다.  이에 따라 조작자는 실사 영상을 즐기면서 손쉽게 목적지를 광디스크에 기입할 수 있다.
Patent KR-19990029936-A (KR)
Title: 다결정 실리콘
IPC: H01L21/304
Filed: 1998-09-18
Abstract: 표면에 저금속농도를 보유한 반도체 재료는 6.66×10 -11 g/cm 2 이하의 표면에 철함유량 및/또는 크로뮴함유량을 가지고 있다.
Patent KR-20000021735-A (KR)
Title: Method of manufacturing thin film transistor
Inventor: KANG SEONG GU
IPC: H01L29/786
Filed: 1998-09-30
Abstract: PURPOSE: A method of manufacturing a thin film transistor is provided to improve yield by preventing defects caused by etching remainder like an electrode layer on a gate insulation layer in forming source/drain electrodes. CONSTITUTION: A method of manufacturing a thin film transistor comprises the steps of: forming a gate on a substrate; sequentially forming a gate insulation layer, an active layer, an ohmic contact layer and an electrode layer to cover the gate on the substrate; patterning the electrode layer, the ohmic contact layer and the active layer of which the portion corresponding to the gate remains to expose the gate insulation layer; and eliminating etching remainder on the gate insulation layer while forming source/drain electrodes by patterning the portion corresponding to the gate of the electrode layer by using the photoresist covering both sides of the ohmic contact layer of the electrode layer.
Patent KR-20000024849-A (KR)
Title: Device for controlling door of elevator
Inventor: JEONG YEONG JU
IPC: B66B13/00
Filed: 1998-10-02
Abstract: PURPOSE: A device for controlling a door is provided to sense the change of a mechanical characteristic of the door and to regulate a detecting level of an excessive load and speed. CONSTITUTION: A device for controlling a door in an elevator is composed of a position sensor(2) for detecting the closing and opening position of the door, a time counter(3) a storage device(5) for storing the reference position data of the door based on the lapse of time on normal operation and a judging device(6) for judging the abnormal action of the door by standardizing the reference position data. Herein, a torque sensor for calculating or detecting an output torque of an electric motor is prepared if the door is controlled by standardizing the torque of the electric motor for opening and closing the door. If the output torque is out of a range of the reference torque, the abnormal action of the door is judged.
Patent KR-20000025699-A (KR)
Title: Multi processing method using infinite loop
Inventor: KIM BO HYUN
IPC: G06F11/30
Filed: 1998-10-13
Abstract: PURPOSE: A multi processing method using the infinite loop is provided to be applied to a variety of programs without being limited to a certain module. CONSTITUTION: A multi processing method using the infinite loop comprises a step of starting the operation of the infinite loop(201); a step of carrying out the command word(203); a step of finishing the operation of the command word(205). The method further comprises a step of delaying the process for a certain time period and a step of repeating the above steps to complete the whole procedure. The delay of time carries out the function of reducing occupancy ratio of the multi processor.
Patent KR-20000026025-A (KR)
Title: Disk for electronic clutch and hub assembly
Inventor: SEOK JONG MYEONG
IPC: F16D27/14
Filed: 1998-10-16
Abstract: PURPOSE: A disk for an electronic clutch is provided to reduce the number of assemblers and costs by decreasing the number of components and to improve the performance of a compressor by reducing the loss in power transfer as well as to reduce noise in working a clutch. CONSTITUTION: A friction surface of a disk(2) is adhered to the friction surface of a pulley(53) by moving the disk to the friction surface of the pulley through the magnetic force generated by an exciting coil(61) if electric power is fed to the female coil of an electromagnet. The magnetic force is operated to an inner disk ring(21) stronger than the outer disk ring(23). A second leaf spring(37) connected with the inner disk ring is shorter than a first leaf spring(35) connected with the outer disk ring so the inner disk ring as to be connected to the friction surface of the pulley later than the outer disk ring. The noise generated from a clutch is reduced more than as the inner disk ring and the outer disk ring are contacted with the friction surface of the pulley at the same time if the disk rings are contacted with time difference.
Patent KR-20000026268-A (KR)
Title: D flip-flop circuit
Inventor: KIM JI YEONG
IPC: H03K3/037
Filed: 1998-10-19
Abstract: PURPOSE: A D flip-flop having a miniaturized composition is provided to reduce the size of cells and the size of chips. CONSTITUTION: A D flip-flop circuit comprises a first inverter, a second inverter, a reverse circuit, a third inverter, a first transmission gate, a first logic circuit, a second logic circuit, a second transmission gate, a fourth inverter, a fifth inverter, and a sixth inverter. The first inverter reverses a clock signal. The second inverter reverses the reversed clock signal. The reverse circuit is controlled by the clock signal reversed via the first and the second inverter, and reverses an input signal. The third inverter reverses the reversed input signal. The first transmission gate is controlled by the clock signal reversed through the first/the second inverter, and transfers the input signal reversed via the third inverter. The first logic circuit is controlled by the clock signal reversed via the first and second inverter, and operates the input signal and a reset signal in NAND. The second logic circuit operates the input signal in NAND transferred through the reset signal and the first transmission gate inverter. The second transmission gate is controlled by the reversed clock signal through the first and the second inverter, and transfers the input signal transferred through the first transmission gate. The fourth inverter reverses an output of the second logic circuit. The fifth inverter reverses an output of the second transmission gate. The sixth inverter has an input terminal connected to current paths, which are formed between the input of the fourth inverter and the output of the second logic circuit, and an output terminal connected to current paths, which are formed between the output terminal of the second transmission gate and the input of the fifth inverter.
Patent KR-20000026817-A (KR)
Title: Battery tester
Inventor: LEE SANG CHUN
IPC: G01R33/36
Filed: 1998-10-23
Abstract: PURPOSE: A battery tester is provided to accurately test a battery for a portable electronic device by making one circuit both of charging and discharging test. Also, the tester increases productivity and reliability of product by simplifying the components of the tester. CONSTITUTION: A battery tester, a charge and discharge part(20), is composed of a static voltage activation part(21), a static current activation part(22), a selecting part(23), and a charging and discharging part(24). The charge and discharge part(20) sets up between a first and a second D/A(Digital/Analogue) converter(11,12) and a battery(10). The static voltage part(21) amplifies the input voltage(V1) from the first D/A converter(11) and the amplified voltage controls the charge voltage of battery. The static voltage activation part(22) amplifies the input voltage(V2) from the second D/A converter(12) and the amplified voltage controls the maximum charged or discharged current. The selecting part(23) chooses charging method between a static current and voltage charging method by comparing two input amplified signals from the static voltage part(21) and the static current part(22). The battery(10) is charged or discharged at charging and discharging part(24) by input voltage of the selecting part(23). The battery is charged when the input voltage from the selecting part is positive and the voltage is limited by amplified voltage(V1,V2) from the first and the second D/A converter(11,12). Also, the battery is discharged if the input voltage is negative and the discharge current is fixed by the amplified output voltage(V2) of the second D/A converter.
Patent KR-20000027358-A (KR)
Title: Method for forming lower electrode of capacitor of ferroelectric memory device
Inventor: YOU YONG SIK
IPC: H01L27/10
Filed: 1998-10-28
Abstract: PURPOSE: A method for forming lower electrode of capacitor of ferroelectric memory device is provided to enhance the reliability and productivity of the device because a titanium oxide film has an excellent bonding force with a lower electrode substance and an interlayer dielectric, and to prevent short circuit by suppressing the leakage of a ferroelectric thin film. CONSTITUTION: A method for forming lower electrode of capacitor of ferroelectric memory device comprises steps of: forming a titanium nitride film(3): converting the titanium nitride film into a titanium oxide film(2): forming a conductive film for a lower electrode on the titanium oxide film. The titanium nitride film is formed on an overall structure of a substrate(1) having an interlayer dielectric formed. The conversion step is performed by heat treatment under an oxygen atmosphere.