baber/WOPTO huggingface dataset:
Patent KR-20000026360-A (KR)
Title: Apparatus for developing photoresist
Inventor: CHA BYONG CHEOL
IPC: G03F7/26
Filed: 1998-10-20
Abstract: PURPOSE: An apparatus for developing photoresist is provided to manufacture a photo mask suitable for a manufacture of a high-integrated semiconductor device by forming a photoresist pattern for providing a uniform bias over all surfaces of the photo mask. CONSTITUTION: A rotating axis(13) is attached to a center portion of a lower surface of a photo mask loader(11), and supports the photo mask loader(11). The photo mask loader(11) has a same shape with a photo mask(M) on an upper surface opposed to the lower surface in which the rotating axis(13) is attached. The photo mask loader(11) has a groove with a depth which is equal to a thickness of the photo mask(M). A surface of the photo mask(M) and a groove surface of the photo mask loader(11) have same height each other when loading the photo mask(M) to the groove of the photo mask loader(11).
Patent KR-20000026555-A (KR)
Title: Generator for absorption type heat pump with ammonia
Inventor: YANG YEONG MYEONG
IPC: F25B15/02
Filed: 1998-10-21
Abstract: PURPOSE: A generator for an absorption type heat exchanger is provided to increase the area for a rectifying unit as well as to enhance the heat exchanging efficiency. CONSTITUTION: A generator for an absorption type heat exchanger is made up of: a generator for heating an ammonia solution from a heat source; a rectifier; a condenser; an evaporator; and a liquid pump. A weak solution in the ammonia solution flows into the lower part of the generator. Then, the weak solution exchanges heat with a low temperature part before the solution flows into an absorber. Therefore, the generator is able to enhance the heat exchanging efficiency.
Patent KR-20000026984-A (KR)
Title: Use of ecdysteroid compound and composition thereof to improve metabolism of alcohol
Inventor: RYU KI JUNG
IPC: A01G1/00
Filed: 1998-10-23
Abstract: PURPOSE: Aecdysteroid compound and a composition containing thereof are provided which improves the metabolism of alcohol. CONSTITUTION: Ecdysteroid compounds such as beta-ecdysone and polypodine B are able to be used to improve the metabolism of alcohol. And composition contains the ecdysteroid compound, additives for flavor or taste and another effective component for improving the metabolism of alcohol. The composition is prepared by mixing an effective amounts of the ecdysteroid compound with a suitable diluent.
Patent KR-20000027262-A (KR)
Title: Device for preventing hit and run
Inventor: CHOI JAE CHEON
IPC: B60R21/00
Filed: 1998-10-27
Abstract: PURPOSE: A device is provided to prevent a hit and run by making an after-trace of a vehicle of the hit and run. CONSTITUTION: A device is composed of a vehicle shock sensing device, a trigger device, a gas storage device and a diffusion developing device installed with a chip in which an inherent vehicle number is encoded and numbered. If a vehicle at more than a 50km/h speed that a hit and run is possible occurs a collis ion accident, a weight body(20) is forwarded in an A direction, and a front end of a first operation lever(17) rotates along with the slant face(21). In addition, the oval rounded-face part(16) of a second operation lever(15) pushes a pin head(23) of a pin block while rotating in a C direction by the strong restoration force of a spring(14). Thereby, the compressed gas of a gas tank is emitted.
Patent KR-20000030983-A (KR)
Title: Aluminum thin film for aluminum electrolytic capacitor having doble dielectric layer
Inventor: CHO SANG PHIL
IPC: H01G9/02
Filed: 1998-11-02
Abstract: PURPOSE: An aluminum thin film for aluminum electrolytic capacitor having doble dielectric layer is provided to consist of double dielectric layer which is compact and sustains high capacitance and high voltage performance by forming a Al2O3 dielectric layer and another dielectric layer on the aluminum thin film. CONSTITUTION: An aluminum thin film for aluminum electrolytic capacitor having doble dielectric layer comprises an aluminum thin film(10), an aluminum oxide(Al2O3) dielectric layer(20), and a Nb2O5 or Ta2O5 dielectric layer(30). The dielectric layer(30) is formed on the dielectric layer(20) by a sol-gel process using Nb-Ta or alkoxide solution-alkoxide solution. Therefore, the aluminum thin film has double dielectric layers(20,30).
Patent KR-20000032196-A (KR)
Title: Overload breaker of drive motor
Inventor: KIM BYUNG JUN
IPC: H02H9/00
Filed: 1998-11-13
Abstract: PURPOSE: An overload breaker of drive motor is provided to break excess torque generated when a drive shaft isn't stopped by inaccurate control in spite that an output shaft is under mechanical limit condition. CONSTITUTION: An overload breaker of drive motor comprises a rotation controller(1), a power controller(2), a separating wall(3) for mounting a drive motor(5) and the power controller(2), and a cable(4) for control and power supply. The rotation controller(1) controls the drive motor(5) and an output shaft(9). The power controller(2) breaks the power of the drive motor(5) by the operation of the rotation controller(1). The rotation controller(1) consists of a drive cam(1a) and an output cam(1b). The drive cam(1a) is rotated together the drive shaft and has a lever(1d) which operates the power controller(2).
Patent KR-20000033116-A (KR)
Title: Input device of telephone
Inventor: KIM JIN SEOK
IPC: H04M1/23
Filed: 1998-11-19
Abstract: PURPOSE: An input device of a telephone is provided to input numbers and function information by using the touch panel mounted on the upper part of the screen of a display element, in lieu of a button switch. CONSTITUTION: On the upper part of a display element(2), a touch panel(4) separated by a spacer(46) filled between substrates(42a,42b) and having electrode patterns(44a,44b) depositing indium tin oxide film inside of the substrates(42a,42b) is attached. As the electrode pattern(44a) deposited on the low surface of the upper substrate(42a) contacts the deposited electrode pattern(44b) in the lower substrate(42b) and is shorted, the touch panel(4) generates the signal of coordinate value indicated when pressure is pressurized on the upper surface of the upper substrate(42a).
Patent KR-20000033773-A (KR)
Title: Process for preparing bits for a puncher
Inventor: GU IN YOUNG
IPC: C22C38/00
Filed: 1998-11-25
Abstract: PURPOSE: A process for preparing a bit for a punch is provided to give the simplification of handling a procedure, the easy of mass-production and the enhancement of its production. CONSTITUTION: The process is comprised of the following steps. A mold consistent with the desired shape of bits(10) to be prepared is manufactured. The steel composed of the given components and constitutive ratios is melted at 1500 to 1800°C. The melted steel is injected into the mold to heat-treat for 1 to 2 hours, with preventing from its oxidation at 850 to 950°C. The heat-treated bit is precipitated into cold oil to cool it for 0.5 to 1 hour. The removement is then performed for the remaining defects attached to the surface of the cold bit. The bit is subsequently attached by the super alloyed tip(20). The steel is also characterized by comprising 0.25 to 0.35wt% of C, 0.25 to 0.35wt% of Si, 0.35 to 0.60wt% of Mn, 0.03wt% or less of P, 0.03wt% or less of S, 2.50 to 3.50wt% of Ni, 2.50 to 3.50wt% of Cr, 0.50 to 0.70wt% of Mo and the remainder being Fe.
Patent KR-20000038552-A (KR)
Title: Ignition plug
Inventor: KIM JAE MIN
IPC: H01T13/30
Filed: 1998-12-08
Abstract: PURPOSE: An ignition plug is provided to effectively generate a voltage by regulating a central electrode of the ignition plug. CONSTITUTION: A stud(20) is engaged with a body(10). The body(10) has a hollow shape. A resistance(30) is installed on the lower side of the stud(20). The lower end portion of a central electrode(50) is exposed at the lower side of the body(10), and the upper end portion of the central electrode(50) is separated by a distance from the lower side of the resistance(30). The central electrode(50) has an annular body(51) which makes surface contact with the inner peripheral surface of the body(10). A spring(52) is provided on the lower side of the annular body(51). A conductive spring is disposed between the annular body(51) and the resistance(30). A ground electrode(60) is provided on one side of the body(10), and one end portion of the ground electrode(60) is bent towards the lower end portion of the central electrode(50). The central electrode(50) is protruded with respect to the ground electrode(60) according to the outside temperature condition.
Patent KR-19990063134-A (KR)
Title: 카시아 미모소이데스 엘. 변종 노마메 마키노 유래의 향미가 개선된 추출물 및 그 제조방법
IPC: A61K36/48
Filed: 1998-12-16
Abstract: 본 발명은 카시아 미모소이데스 엘. 변종 노마메 마키노 유래의 추출물 제조방법을 제공한다. 상기 방법은 카시아 미모소이데스 엘. 변종 노마메 마키노 유래의 추출물을 얻기 위해 카시아 미모소이데스 엘. 변종 노마메 마키노를 용매추출시키고, 상기 추출물을 로스팅하는 단계를 포함한다. 본 발명은 또한 카시아 미모소이데스 엘. 변종 노마메 마키노 유래 추출물을 제공하고, 여기서 상기 추출물은 향미를 개선하기 위해 로스팅한다.
Patent KR-19990066851-A (KR)
Title: 금속용탕 온도측정용 열전대
IPC: G01K1/12
Filed: 1998-12-18
Abstract: 본 발명은 보호관(1, 21)을 다층구조로 구성하여 반복사용을 가능하게 한 수명이 긴 금속 온도측정용 열전대를 제공한다.  이 열전대는, 일단이 폐쇄되고 타단은 개방된 보호관(1, 21) 내에 내열 다공질 세라믹으로 된 충전재(8, 25)를 충전하고, 상기 충전재(8, 25) 중에는 다른 조성의 한 쌍의 W-Re 소선(素線, 6, 7, 26, 27)을 배치하고 있다.  보호관(1)은 Mo를 모상으로 하는 서멧층(2)과, C, Mg0, Ca0, Al 2 0 3 및/또는 ZrO 2 의 층(3)이 교대로 적층된 적층구조를 가진다.  서멧층(2)은 최 외각층을 형성하며, 열팽창계수가 작은 한편 철과 반응하기 어려운 Mo-ZrN, Mo-ZrB 2 , Mo-ZrO 2 및/또는 Mo-ZrC로 구성되어 있다.  또는 보호관(21)은, 섬유(24)를 둘레방향으로 끼워 넣은 층(22)과 상기 층(22) 사이의 결합력이 약한 경계층(23)으로 구성할 수 있다.  섬유(24)는 카본섬유 또는 세라믹섬유로 되며 보호관(21) 내외의 온도차로 발생하는 인장응력에 대하여 강도가 높게 된다.
Patent KR-20000046816-A (KR)
Title: Device and method for storing transport stream
Inventor: MIN KYEONG PA
IPC: G11B20/10
Filed: 1998-12-31
Abstract: PURPOSE: A device and a method for storing a transport stream are provided to repeatedly play back by storing the transport stream of MPEG standard with converting to a program stream. CONSTITUTION: A PCR(program clock reference) information is detected by detecting a TC header from a transport stream of MPEG standard. An SCR(system clock reference) information is generated by counting the detected PCR information. One packet is generated by connecting a certain number of PESs(packet elementary stream) except the TS header. A header of generated packet is converted to a program stream by adding the SCR information. The converted program stream is recorded in a recording medium.
Patent KR-19990028926-A (KR)
Title: 세포 부착 억제제
IPC: C07K5/00
Filed: 1996-07-11
Abstract: 본 발명은 세포 부착 및 세포 부착 매개 병리의 억제와 방지에 유용한 신규 화합물에 관한 것이다. 본 발명은 또한 세포 부착 및 세포 부착-매개 병리의 억제와 방지를 위한, 이들 화합물을 포함하는 약학 제제와 그들을 이용하는 방법에 관한 것이다. 본 발명의 화합물과 약학 조성물은 치료 또는 예방 제제로 이용될 수 있다. 그들은 많은 염증 및 자가면역 질병의 치료에 특히 적합하다.
Patent KR-19990044205-A (KR)
Title: 피복 제품의 제조방법
IPC: B05D7/02
Filed: 1996-08-26
Abstract: 본 발명은  전도성이 10 -14 지멘스/cm(S/cm) 이상인 조성물[이는 열가소성 중합체, 열경화성 중합체 또는 이의 혼합물(a)와, 성분(a)와는 상이한 전기전도성 전하 이송 착체 또는 고유 반전도성 중합체(b)를 포함한다]로부터 성형되거나 압출된 제품을 기전적으로 피복하는 단계를 포함하는 피복 제품의 제조방법에 관한 것이다.  본 발명의 방법은 기전적으로 피복된 중합체 제품을 편리하게 제조할 수 있는 수단을 제공하는 것으로 밝혀졌다.
Patent KR-19990063988-A (KR)
IPC: A61P35/00
Filed: 1996-09-30
Abstract: This invention relates to butyrate prodrugs derived from lactic acid and pharmaceutical compositions and methods employing them, either alone or in combination with other agents, for increasing gamma globin and fetal hemoglobin in a patient. These compounds, compositions and methods are particularly effective in treating  beta -hemoglobinopathies, including sickle cell syndromes and  beta -thalassemia syndromes. In addition, this invention relates to the use of these prodrugs, alone or in combination with other agents, to stimulate cell differentiation which prevents proliferation of malignant cells. These methods are particularly useful in treating cancer, especially malignant hematological disorders.
Patent KR-19990067176-A (KR)
Title: 페닐아세트산 유도체, 그의 제조 방법, 그의 제조를 위한 중간생성물, 및 살진균제 및 살충제로서그의 용도
IPC: A01N43/10
Filed: 1996-10-24
Abstract: 본 발명은 화학식 I의 페닐아세트산 유도체에 관한 것이다. 
     <화학식 I> 
     
       
     
     상기 식에서, X는 NOCH 3 , CHOCH 3 또는 CHCH 3 이고, 
     Y는 O 또는 NZ (여기서, Z는 수소 또는 알킬이다)이고, 
     R 1 은 수소 또는 알킬이고, 
     R 2 는 시아노, 니트로, 트리플루오로메틸, 할로겐, 알킬 또는 알콕시이고, 
     m은 0, 1 또는 2 이고, m이 2 인 경우 라디칼 R 2 가 상이할 수 있으며; 
     R 3 은 수소, 시아노, 알킬, 알킬 할라이드, 알콕시 또는 시클로프로필이고, 
     R 4 는 알킬렌디옥시, 부분적으로 또는 완전히 할로겐화된 알킬렌기이거나, 
     라디칼 -(C=O)-R a , 
     -C(=NOR a )-A p -R b (R a 및 R b 는 서로 독립적으로 수소 또는 임의로 치환된 알킬, 알케닐, 알키닐, 시클로알킬, 시클로알케닐, 헤테로시클릴, 아릴 또는 헤트아릴이다), 
     -NR c -(C=O)-A p -R a (p는 0 또는 1이고, A는 산소, 황, 또는 수소 또는 알킬이 부착된 질소이다), 
     -O-(C=O)-NR a R b 또는 
     -N(R c )-OR d (R c 및 R d 는 서로 독립적으로 수소 또는 임의로 치환된 알킬, 알케닐, 알키닐, 알킬카르보닐, 알케닐카르보닐, 알키닐카르보닐, 알콕시카르보닐, 알케닐옥시카르보닐, 알키닐옥시카르보닐, 시클로알킬, 시클로알킬카르보닐, 시클로알킬옥시카르보닐, 아릴카르보닐 또는 헤트아릴카르보닐이다) 중의 하나이고, 
     n은 1 또는 2이고, n이 2일 경우 라디칼 R 4 는 상이할 수 있고, 
     R 5 는 수소, 알킬술포닐, 또는 임의로 치환된 알킬, 알케닐, 알키닐 또는 시클로알킬이다.  추가로 본 발명은 이들 물질의 염, 그들의 제조 방법 및 중간생성물, 및 살진균제 및 살충제로서 그들의 용도에 관한 것이다.
Patent KR-19990077098-A (KR)
Title: 건축물용 코팅 유리
IPC: C03C17/23
Filed: 1997-01-09
Abstract: 코팅 유리(1)는 유리 기판(3) 및 그의 한 측면 이상에 제공된 Sn 산화물, Sb 산화물 및 Ti 산화물로 형성된 막(2)을 포함한다.  상기 유리는 특히 건축물용에 적합하다.
Patent KR-19990082277-A (KR)
IPC: A61K47/30
Filed: 1997-02-04
Abstract: Providing a formulation of a 5 alpha -reductase inhibitor for oral administration. ÄMeans for SolutionÜ   A formulation of a 5 alpha -reductase inhibitor for oral administration, which comprises a composition obtained by grinding a mixture of an azasteroid, a water-soluble polymer and a disintegrant.
Patent KR-20000010999-A (KR)
Title: Equipment and method for recording and reproducing image and sound
Inventor: YONEYA SATOSHI
IPC: H04N7/173
Filed: 1998-03-13
Abstract: PURPOSE: The equipment and method is provided to be memorized to an another recording equipment independently of each video and sound signals. CONSTITUTION: An AV server comprises of; a processor section(30) for conducting various signal proceedings including the compression and expression; a video RAID section(21) for storing video signals; a audio RAID section(10) for storing sound signals. The processor section(30) has a plurality of I/O boards(32n) and manage channels as many as I/O boards. Signals(Avin) including the video and sound signals is input to each I/O boards and is output from each I/O boards. Individual I/O boards supply a sound signal and a video signal to the audio RAID section(10) and the video RAID section(21), respectively, have a audio RAID interface section(33) and a video RAID interface section(34) which receive individually a sound and video signal to the audio(10) and video RAID section(21). The video RAID section(21) reproduce the writing and reading of video sound signals in use of a hard disk, has the RAID-3 structure. The audio RAID section(10) reproduce the writing and reading of sound signals in correspondence with each of a plurality of sound signal channels independently of the video RAID section(21) in use of a hard disk memorizing sound signals.
Patent KR-20000056146-A (KR)
Inventor: PARK JUNG GYU
IPC: C02F3/02
Filed: 1999-02-13
Abstract: PURPOSE: A septic tank for purifying livestock wastewater is provided which occupies small volume and is placed cheaply and easily. CONSTITUTION: A method for purifying livestock wastewater is characterized by passing livestock wastewater in a septic tank(1) wherein a sedimentation separation zone(3), a filtration zone(4) wherein a screen is placed to filter wastewater treated in the sedimentation separation zone firstly, a connection aeration zone(5) wherein a connection media(10) using aerobic bacteria purifies wastewater to pass superior water to the next zone for exhausting outwardly, a final sedimentation zone(6) and a disinfection/discharge zone(8) are partitioned.
Patent KR-20000060673-A (KR)
Inventor: LEE JUN HWAN
IPC: H04N7/08
Filed: 1999-03-18
Abstract: PURPOSE: A text region subtraction and a text recognition method of compressed news images is provided to determine whether text exists in a frame by using a DCT(discrete fourier transform) coefficients rather than decoding news images in order to reduce time required. CONSTITUTION: The text region subtraction and a text recognition method of a compressed news images includes following steps. When the number of DCT blocks whose horizontal, vertical and diagonal coefficients from an I-frame configuring compressed news images are more than predetermined values is over a predetermined value, than the I-frame is determined as a text frame(11). The text region at which a gradient between pixels from the determined text frame is more than a predetermined value is determined(13). Then, the text region is converted to a binary format(14). The determined text region is divided into a text and background region, and the background region is masked. The output of the preceding step is filtered so as to reduce noise(15). The binary text region is divided into separate characters(16) and the characters are normalized(17). The normalized characters are recognized(18).
Patent KR-19990082856-A (KR)
Title: 서보 클러치의 조정 시스템
IPC: F16D48/06
Filed: 1999-04-01
Abstract: 본 발명은 자동차의 구동 라인 조정 시스템으로, 자동차 엔진, 트랜스미션, 배열된 서보 클러치로 이루어진다.  트랜스미션 변속을 위해 조정 유니트로 조정되는 서보 부재의 결합 및 해제로 클러치의 개폐를 수행한다.  클러치 초기 모멘트로 나타나는 모멘트 크기를 파악한다.  파악된 모멘트 크기에 따라 적어도 해제가 되도록 조정 유니트를 설계한다.  본원의 요지는 파악된 모멘트 크기에 의해 적어도 클러치의 해제 가속도 및/또는 해제 속도가 조정되는 것이다.
Patent KR-20000066413-A (KR)
Title: Cylinder-shaped secondary battery
Inventor: CHOI YUN SEOK
IPC: H01M10/44
Filed: 1999-04-16
Abstract: PURPOSE: A cylinder-shaped secondary battery is provided to exhaust the initial generating gas to the outside by using one-way valve. CONSTITUTION: A cylinder-shaped secondary battery comprises a case, a positive pole plate, a negative pole plate, an insulating member, and a cap cover(22). The cap cover is formed with a bent hole. A body portion(41) is inserted into the bent hole of the cap cover. A gas penetrating groove(44) is formed on an outer circumference face of the body portion. An upper flange(42) is formed at an outside of the body portion and it is located at an upper portion of the cap cover. A lower flange(43) is located at a lower portion of the cap cover. An elastic spring is located between the upper flange and the cap cover.
Patent KR-20000006129-A (KR)
Inventor: GODWIN HEROLD
IPC: B29C45/02
Filed: 1999-06-11
Abstract: PURPOSE: A device and a method are provided to efficiently regulate heat and a flow of the melting resin inside a melting channel of a high temperature-runner nozzle and a cast manifold. CONSTITUTION: The device used with an injection-molding machine is installed with: a sharing plate; a core plate placed on the sharing plate for forming a sharing space with the sharing plate; a manifold(64) formed with an entrance passage inside; a high temperature-runner nozzle(66) for orientating the flow of the melting resin to the sharing space; a cast gate(216) for regulating the flow of the melting resin to the sharing space; an active or a passive thin film device placed along with the melting channel which is not flat.
Patent KR-20010008626-A (KR)
Inventor: KANG GYEONG HO
IPC: G09G3/296
Filed: 1999-07-02
Abstract: PURPOSE: A driver of plasma display panel with address electrode drive power recovery circuit is provided to dispose a separate electrode between adjacent address electrodes to recover an address drive power unnecessary consumed. CONSTITUTION: The driver of plasma display panel with address electrode drive power recovery circuit comprises a plasma display panel, an address electrode drive circuit and first/second address electrode drive power recovery circuits. The plasma display panel comprises front/rear substrates, sustain electrodes, address electrodes, barrier ribs and address common electrodes. The address electrode drive circuit drives the address electrodes. The first address electrode drive power recovery circuit is synchronized to odd scan electrode drive signals and is connected to a common terminal of the address common electrodes to recover the drive power of the address electrodes.
Patent KR-20010008971-A (KR)
Inventor: KIM SEONG HO
IPC: F04D27/00
Filed: 1999-07-06
Abstract: PURPOSE: A fan controlling device by a microcomputer provides to be able to precisely adjust a wind pressure and a wind speed as much as a user wants. CONSTITUTION: A fan controlling device by a microcomputer comprises a fan controlling part, a fan driving part, a voltage sensing part, a microcomputer(10), and a fan speed adjusting part(20). The microcomputer(10) sense transmitted voltage from a circuit, adjusts a duty rate of a pulse with the voltage, and transmits the duty rate to the fan speed adjusting part. For example, a machine is shut down if the voltage is less than 1 volt, or the duty rate of a pulse is output if the voltage is more than 2 volt. Thus, The fan speed adjusting part moderately adjusts a speed of a fan with the transmitted pulse.
Patent KR-20010009248-A (KR)
Inventor: PARK SEUNG HYEONG
IPC: F16H48/34
Filed: 1999-07-08
Abstract: PURPOSE: A differential lock automatic releasing device prevents the damage of a rear side power transmission device and the abnormal abrasion of a tire by automatically releasing a differential lock of a vehicle on moving beyond a predetermined velocity. CONSTITUTION: A differential lock automatic releasing device comprises an electricity switching device and a vehicle speed perceiving device. The electricity switching device disposed between a differential lock switch(9) and a pneumatic solenoid valve(7) interrupts electric signals inputted into the pneumatic solenoid valve(7) according to a vehicle speed. The differential lock switch(9) and the pneumatic solenoid valve(7) are electrically connected. The vehicle speed perceiving device mounted on one side of a propelling shaft(12) for transmitting a rotating power from a transmission(11) to a differential sends the signal of the vehicle speed to the electricity switching device.
Patent KR-20000016936-A (KR)
Inventor: BEILIAGSILBI
IPC: G01N33/49
Filed: 1999-07-14
Abstract: PURPOSE: A reagent is provided to enable a concentration measurement and a solution of a red blood without using a cyanide composition. CONSTITUTION: The reagent comprises at least one washing agent of a positive ion form; a composition of a glucoside form; inorganic salts and/or osmotic pressure agents and/or leucocyte protective agents; and an organic and/or inorganic buffer agent for adjusting pH of the reagent with a substantially neutral value (pH 5 to 8) or a basic value (pH 8 to 12). The reagent is applied to a blood analysis of a human and an animal.
Patent KR-20000011945-A (KR)
Inventor: SHIO TAIKU
IPC: H01L21/34
Filed: 1999-07-23
Abstract: PURPOSE: A method for manufacturing a semiconductor substrate with a high yield rate is provided for the semiconductor substrate to be an SOI substrate suitable for manufacturing a high frequency transistor. CONSTITUTION: A method for manufacturing an SOI substrate comprises: preparing a silicon wafer containing a porosity layer(11), a semiconductor layer area(12) formed by a single crystal semiconductor, and an insulating layer(2) formed by silicon oxide, as a first material; preparing a silicon substrate as a second material(10); combining the first and the second materials by contacting the combining surface of the insulating layer of the first material to the combining surface of the silicon of the second silicon wafer and heat treating in the temperature of 900 ¯ 1200°C for obtaining a multi-layered structure; and eliminating the porosity layer and the first material on the rear surface of the porosity layer by polishing, wet typed etching, or a dry typed etching. Therefore, the second material of the silicon wafer as a supporting substrate and the SOI substrate containing a semiconductor layer area(12) of the single crystal silicon formed by laying the insulating layer on the second material are obtained.