baber/WOPTO huggingface dataset:
Patent KR-20000001991-A (KR)
Title: Reproducing apparatus for volume holographic digital data storage system
Inventor: KIM KEUN YUL
IPC: G03H1/00
Filed: 1998-06-16
Abstract: PURPOSE: An apparatus for reproducing volume holographic digital data is provided to control the brightness of a reproduced object. CONSTITUTION: A storage medium(200) for storing digital data corresponding to a light-modulated object light and reproducing the light-modulated object light corresponding to the stored object light depending on an incident reference light, a reflection mirror(210) for reflecting the reference light transmitted through the storage medium(200) at a predetermined angle(theta), the reflected light and the reproduced object light crossing each other, an amplifier(220) placed at the intersection of the reflected reference light and the reproduced object light and for adjusting the amplification factor of the reproduced object light, and a charge-coupled device(CCD)(230) for converting the amplified light-modulated object light into electrical signals.
Patent KR-19980065027-A (KR)
Title: 셀단위 망구조의 이동통신망을 이용한 지역교통정보 서비스 방법 및 시스템
Filed: 1998-06-17
Abstract: 본 발명은 이동통신망의 특성을 이용하여 이동통신단말기 이용자의 셀/존위치를 자동추적하여 이를 기반으로 해당위치에서 실질적으로 필요한 교통정보를 제공하는 시스템과 그 방법을 제공한다. 
     이때 자동위치추적은 단문메세지서비스와 이동통신단말기가 가지고 있는 셀정보를 이용하는 방법과, 교환기에 연계되어있는 방문객 위치등록기(VLR)의 정보를 이용하는 방법이 사용되고, 사용자는 이동통신단말기로 문자 또는 음성의 교통정보를 받게 된다.
Patent KR-20000002372-A (KR)
Title: Powder compact color make up composition having superior ability for absorbing sebum
Inventor: KIM SANG JUN
IPC: A61K8/23
Filed: 1998-06-19
Abstract: PURPOSE: A powder compact color make up composition having a superior ability for absorbing sebum is provided to improve a Pay-Off ability, to offer a superior compressed compact. CONSTITUTION: A color make up composition comprises: 10-30 wt% of a porous globular silica; 10-60 wt% of CaSO4 2H2O; 20-75 wt% of a powder sieve; 3-5 wt% of oil; 1-10 wt% of a reactive silicone.
Patent KR-20000003740-A (KR)
Title: Method for manufacturing liquid crystal display of thin film transistor
Inventor: YIM SEUNG MU
IPC: G02F1/136
Filed: 1998-06-29
Abstract: PURPOSE: A method for manufacturing a liquid crystal display of a thin film transistor is provided to easily forming a minute pattern of ITO metal film with a simple process. CONSTITUTION: The method for manufacturing liquid crystal display of a thin film transistor(30) comprises the steps of: providing a glass substrate(21) having a thin film transistor on an upper area thereof; coating an organic insulation film(24) on the glass substrate; forming a contact hole exposing a part of the thin film transistor on a predetermined area of the organic insulation film; depositing a first ITO metal film(26a) of predetermined width on the organic insulation film at low temperature; a second ITO metal film(26b) of predetermined width on the first ITO metal film at high temperature; and forming a pixel electrode(28) by etching the first and second ITO metal film.
Patent KR-19980071915-A (KR)
Title: 자동차 오일펌프용 스프로킷 성형방법
Filed: 1998-07-02
Abstract: 한 번의 프레스작업으로 다단형상인 스프로킷을 균일한 밀도와 강도로 성형하는 것이 가능하여 생산성의 향상과 원료를 절감할 수 있도록, 다이 및 코아로드와 아래안쪽펀치 및 아래중간펀치와 아래바깥펀치로 이루어지는 공간에 분말원료를 투입하는 원료투입과정과, 위펀치를 하강시켜 투입된 분말원료를 가압하고 코아로드와 다이를 위펀치의 하강속도에 비례하여 소정의 위치까지 하강시키고 아래바깥펀치는 정지시키고 아래안쪽펀치 및 아래중간펀치를 위펀치의 하강속도와 각각 다른 속도로 소정의 위치까지 하강시켜 균일한 밀도로 고르게 분말원료를 충전하는 충전과정과, 코아로드 및 다이와 아래안쪽펀치 및 아래중간펀치의 하강을 정지시키고 위펀치를 계속 하강시켜 충전된 분말원료를 가압하여 스프로킷을 성형하는 압축과정과, 위펀치를 상승시키고 다이는 하강시키며 코아로드 및 아래안쪽펀치와 아래중간펀치 및 아래바깥펀치를 상승시켜 스프로킷을 취출하는 취출과정을 포함하는 자동차 오일펌프용 스프로킷 성형방법을 제공한다.
Patent KR-20000007459-A (KR)
Title: Complex oxide catalyst of multicomponent system and manufacture method thereof
Inventor: LEE YUNG GIL
IPC: B01J21/02
Filed: 1998-07-03
Abstract: PURPOSE: A complex oxide catalyst of the multicomponent system having the core-shell structure is provided to show the excellent catalyst activation, used as a catalyst when manufacturing the nitrile compound by the ammoxidation of olefin, paraffin and the like. CONSTITUTION: The complex oxide catalyst of the multicomponent system is composed of the steps of: mixing the solution including molybdenum and silica sol with the solution including iron and nickel, and forming the core part by performing the slurry reaction and drying and crushing the slurry after controlling the pH of the mixed solution to three to five degree; and forming the shell part by impregnating the solution including bismuth and A, E component element with the crushed core material.
Patent KR-20000008022-A (KR)
Title: Method for forming a gate oxide
Inventor: CHO WON JOO
IPC: H01L21/316
Filed: 1998-07-09
Abstract: PURPOSE: A gate oxide formation method is provided to prevent a penetration of impurity ions to a substrate by using a nitride layer between the gate oxide and a gate electrode. CONSTITUTION: The method comprises the steps of removing a native oxide by performing precleaning process to a semiconductor substrate(31); forming a nitride layer(32) on the surface of the semiconductor substrate(31) by implanting nitrogen gases; and forming an oxide layer(33) at interface between the nitride layer(32) and the semiconductor substrate(31) by oxidation at oxygen gas atmosphere, thereby easily forming a gate oxide(34) composed of the nitride layer(32) and the oxide layer(33).
Patent KR-20000008643-A (KR)
Title: Dressing method and device of grinding whetstone
Inventor: KIM SUN HO
IPC: B24B53/00
Filed: 1998-07-15
Abstract: PURPOSE: A dressing method and a device of a grinding whetstone is provided to perform minutely by deciding the dressing time and amount by sensing the surface state of grinding whetstone. CONSTITUTION: A dressing device comprises:a dressing unit for flourishing the surface of a grinding whetstone(10); a sensing device(20) for sensing the surface state of the grinding whetstone; a control unit(30) for controlling the dressing unit and the dressing time and amount by using the data of the surface state of the grinding whetstone sensed from the sensing device.
Patent KR-20000009149-A (KR)
Title: Actuator manufacturing method of print head
Inventor: KIM IL
IPC: B41J2/045
Filed: 1998-07-22
Abstract: PURPOSE: An actuator manufacturing method of a print head is provided to be able to obtain the junction of a vibrating plate having an excellent strength and reliability and a liquid chamber layer. CONSTITUTION: The actuator is composed of the steps of:patterning a photo register(7) in every place where a liquid chamber(2) is formed on the lower part of the vibrating plate(3); plating so as to form the liquid chamber layer(1) on the lower part of the vibrating plate when the patterning is completed; manufacturing the liquid chamber layer in the state of being firmly attached to the bottom area of the vibrating plate when removing the photo register; forming sequentially the lower and the upper electrodes(4, 6) and the piezo-electric body(5) on the upper part of the vibrating plate.
Patent KR-20000009435-A (KR)
Title: Printing method of multi-page for printer system
Inventor: SONG WOO GI
IPC: B41J5/30
Filed: 1998-07-24
Abstract: PURPOSE: A printing method of multi-page for a printer system is provided to improve the speed of a print engine by using a band printing method when printing the documents having a high compression rate such as a text document. CONSTITUTION: The printing method is composed of the steps of:processing printing by unpacking the compression in the band buffer and transmitting the data of a first page after stacking the data in the first area of list buffer; performing the print preparation work by stacking the data of a second page into the second area of the list buffer; performing the print preparation work by stacking the data of a third page into the third area of the list buffer in case of stacking all the data of the second page; continuously performing the print for the second page when finishing printing for the first page and transmitting a print order from the print start point for the second page to the third page.
Patent KR-20000018923-A (KR)
Title: Memory managing method and a device for information searching system for plurality of users
Inventor: NO DAE SIK
IPC: G06F12/00
Filed: 1998-09-07
Abstract: PURPOSE: A memory managing method and the device is provided to enhance the speed of applied program and memory usage by using the memory in the operative usage while operating as client/server and to enhance the speedy information search. CONSTITUTION: The device comprises a search client(100) which provides a user searching interface and which requests search at the server; a search engine(220) which searches the index data stored at the hard disk(400) and carries out the search result; and a memory manager(210) which manages and stores usable memory using the memory pool index (311) and the data type(312) according to the request of memory search engine. The search engine(220) detects the necessary data by searching the index data existing in the hard disk(400).
Patent KR-19990029673-A (KR)
Title: 탄탈스퍼터링타겟과 그 제조방법 및 조립체
IPC: C23C14/34
Filed: 1998-09-10
Abstract: 본 발명은, Ta스퍼터링타겟과 그 제조방법 및 조립체에 관한 것이며, 특히 LSI에 있어서의 전극 및 배선의 확산배리어층으로서의 Ta막 또는 TaN막의 형성에 사용되는 Ta스퍼터링타겟과 그 제조방법 및 조립체에 관한 것으로서, 파티클이 적고, 저항치의 불균일이 적은 Ta막 및 TaNx막을 얻을 수 있는 염가의 Ta타겟개발을 과제로한 것이며, 그 해결수단으로서, 평균결정입자직경이 0.1∼300㎛이고 그 불균일이 ±20%이하, 산소농도가 50ppm이하, Na≤0.1ppm, K≤0.1ppm, U≤1ppb, Th≤1ppb, Fe≤5ppm, Cr≤5ppm, Ni≤5ppm, 고융점금속원소의 함유량 합계가 50ppm이하인 Ta스퍼터링타겟, 바람직하게는, {110},{200} 및 {211}의 3개의 면의 강도비의 총합이 55%이상이고, 또한 그 불균일이 ±20%이하, 수소농도가 20ppm이하, 스퍼터표면부분의 평균거칠기(Ra)가 0.01∼5㎛, 스퍼터링표면부분의 산화물층의 두께가 200㎚이하, 타겟의 스퍼터링된 물질이 퇴적하는 부분을 거칠게한 면으로 하는 것을 특징으로 한 것이다.
Patent KR-20000019285-A (KR)
Title: Manufacturing method of capacitor in semiconductor device
Inventor: OH GI YEONG
IPC: H01L21/02
Filed: 1998-09-10
Abstract: PURPOSE: A manufacturing method of a capacitor is provided to prevent a resistance between a storage electrode and a plug from increasing by controlling an oxidation of a barrier layer. CONSTITUTION: A manufacturing method of a capacitor comprises the steps of: forming on a semiconductor substrate of a first conductivity in which a transistor including an impurity region of a second conductivity is formed, an insulation layer having a contact hole exposing the impurity region; sequentially evaporating a contact layer in contact with the plug on the insulation layer, a first barrier layer and a storage electrode, and patterning for exposing the insulation layer so that only a portion corresponding to the plug is remained; forming a second barrier layer on the patterned side walls of the contact layer; and forming a dielectric layer and an upper electrode on the lower electrode and the second barrier layer.
Patent KR-20000020624-A (KR)
Title: Gain variation compensating apparatus of a high power amplifier
Inventor: KIM SEON WOOK
IPC: H03G3/00
Filed: 1998-09-22
Abstract: PURPOSE: A gain variation compensating apparatus is provided to improve a speed of a gain compensating function by reducing a processor load and to reduce a possibility of a malfunction generation. CONSTITUTION: A gain controlling apparatus comprises a variable attenuator(210), a high power amplifier(220) and a heat sensor(230). The variable attenuator(210) attenuates a level of an input signal by an attenuation value, and the high power amplifier(220) amplifies the attenuated signal. The heat sensor senses a heat produced at an amplifier device in the high power amplifier to determine an attenuation value. The heat attenuator(230) is comprised of an analog compensating circuit, and is disposed beside an amplifier device of a last stage among a plurality of amplifier devices which constitute the high power amplifier.
Patent KR-19990030044-A (KR)
Title: 이축 연신된 폴리에스테르 필름, 이의 용도 및 이의 제조방법
IPC: B29K67/00
Filed: 1998-09-23
Abstract: 본 발명은 광학 특성이 매우 양호하고, 가공 특성이 양호하며, 산화 물질로 금속화되거나 피복된 후에, 높은 산소 차단성을 나타내고, 하나 이상의 기재층 B 및 기재층의 상부에 적용된, 제한된 높이와 직경의 제한된 수의 상승부를 갖는 하나 이상의 층 A로부터 형성되는 이축 연신된 폴리에스테르 필름에 관한 것이다.  본 발명은 또한 필름의 용도 및 이의 제조방법에 관한 것이다.
Patent KR-19980087862-A (KR)
Title: 헤어 클립
IPC: A45D8/02
Filed: 1998-09-25
Abstract: 본 발명은 서로 대응하는 한 쌍의 기판에 각각 장식부재를 부착한 헤어 클립을 일 측부로 세워 사용하게 함으로써 장식효과를 높임과 동시에 모발을 세워 다양한 헤어스타일을 연출할 수 있게 하며, 상기 한 쌍의 기판 내에는 서로를 향해 궁형을 이루는 한 쌍의 판스프링이 형성된 것에 의해 모발을 확고하게 부여잡아 헤어 클립이 모발에서 흘러내리지 않게 하여 기능성을 향상시킨 헤어 클립을 제공하는 것으로, 탄성체를 이루고 표면에는 장식부재가 부착되며 일단이 힌지 연결되고 타단이 걸림편과 누름탄성후크에 의해 착탈 가능하게 결합되는 한 쌍의 기판 및, 상기 한 쌍의 기판 이면에 서로를 향해 궁형을 이루어 모발을 부여잡는 한 쌍의 판스프링을 형성하여 구성한 것을 특징으로 한다.
Patent KR-20000021187-A (KR)
Title: Rotary type power adjusting device in vacuum cleaner
Inventor: LEE NOH SOO
IPC: A47L9/00
Filed: 1998-09-26
Abstract: PURPOSE: A rotary type power adjusting device which can on/off the power for a suction motor and changes the suction force by simply rotating a power adjusting nob, by installed in rateable manner to the main body of a vacuum cleaner is provided so that operation of a power switch is easy, and efficient and convenient cleaning is possible. CONSTITUTION: A rotary type power adjusting device is formed of a mounted PCB(40)where a rheostat is attached, on the upper part(30) of the main body(10), a nob guide(60) of which nob axis(61) passes through the rheostat to slide volume(80) on the upper cover(20) over the main body, and a power adjusting nob(70) which rotates the nob guide. The rotary type power adjusting device has advantages of easy operation of power on/off and suction force adjustment, assembling, and desirability for preventing the PCB from breakages.
Patent KR-19990030202-A (KR)
Title: 전자렌지
IPC: H05B6/80
Filed: 1998-09-28
Abstract: 개시된 전자렌지는 조리실 저면에 설치되어 조리될 음식물이 적치되는 트레이; 상기 트레이의 하부에 설치되며 상기 조리실 내에 조사된 전자파를 분산시키기 위한 스터러; 상기 트레이 및 상기 스터러를 동시에 회전시키기 위한 모터 조립체를 포함하는 것을 특징으로 한다. 이에 따르면, 음식물이 놓여지는 트레이와 마이크로파를 반사시키기 위한 스터러가 하나의 모터조립체에 의하여 구동되므로, 전자렌지의 구조가 간단하고 제조원가가 절감되며, 조리실 바닥면의 그루브에 마련된 커버부재에 의하여 수용홈으로 이물질이 유입되는 것이 방지되어 스터러가 오염되는 것을 미연에 방지할 수 있다.
Patent KR-20000024949-A (KR)
Title: Three dimensional video data encoder and decoder
Inventor: AHN JUNG HWAN
IPC: H04N13/00
Filed: 1998-10-02
Abstract: PURPOSE: An encoder and a decoder are provided to enhance an efficiency in encoding an estimated error signal in a three dimensional grating point encoding by effectively encoding an overload error in a quantization error. CONSTITUTION: A pre-processing part(100) calculates an estimated error with an input of three dimensional video data, calculates boundary values from a histogram indicating an error distribution, and outputs a first information including information of the boundary values and quantization bits with respect to the boundary values. A quantization part(120) generates a predetermined first code and outputs quantized error values. An encoding part(140) inputs and encodes a quantized bit stream and the first code to output an encoded bit stream.
Patent KR-20000025592-A (KR)
Title: Apparatus for molding semiconductor chip package
Inventor: KU HEE MO
IPC: H01L23/10
Filed: 1998-10-13
Abstract: PURPOSE: An apparatus is provided to reduce molding-defected products to enhance the cost reduction effect and the quality reliability by guiding sides of lead frame by means of corner position decis ion blocks and position decis ion blocks. CONSTITUTION: A lower molding die(21) has plural position decis ion blocks(25a, 25b) guiding edges of lead frames for an envelope region of the lead frames to be positioned at the grooves(23), and the position decis ion blocks(25a, 25b) are slanted from upper portions to lower portions thereof in an inward direction. The position decis ion blocks(25a, 25b) are opposite to each other with respect to the grooves(23) to make pairs. The lower molding die(21) further comprises corner position decis ion blocks(26a, 26b) to guide corners of the lead frame
Patent KR-20000026773-A (KR)
Title: Producing method of inorganic composite film
Inventor: LEE GYU HO
IPC: B01J35/06
Filed: 1998-10-19
Abstract: PURPOSE: A producing method of an inorganic composite film is provided to have a high precis ion degree of an inorganic film by heat-processing a supporting body formed with a metal film at a high temperature, to save energy by efficiently heat-processing at a relatively low temperature and to use as a dehydrogenation catalyst of organic compounds. CONSTITUTION: An organic metal compound is deposited on the surface of a porous supporting body, and a metal film is formed on the surface of the supporting body at a common temperature by flowing in reductive gas on the opposite face of the supporting body. Herein, the metal film has the thickness of 0.1 to 5 micrometer, and the reductive gas is the gas that hydrogen gas or hydrogen is mixed with argon. In addition, the metal film is produced by heat-processing the supporting body at a high temperature of 300 to 800°C under a hydrogen pressure as an after-processing process.
Patent KR-20000027039-A (KR)
Title: Method for recycling plastic rocker cover of vehicle
Inventor: CHOI CHI HUN
IPC: B29B17/00
Filed: 1998-10-26
Abstract: PURPOSE: A method is provided to produce a recycled resin by mixing a raw material resin with a smashing resin extruded a smashing material from a waste plastic rocker cover removed rubber and metal. CONSTITUTION: A method produces recycled resin by mixing a raw material resin with a smashing resin extruded a smashing material from a waste plastic rocker cover removed rubber and metal. The recycled resin is mixed 1 to 95wt% of the raw material resin. The waste plastic rocker cover is pulverized in 5 to 30mm and pulverized again in 1 to 4mm. The waste plastic rocker cover is also pulverized by mixing glass fiber as reinforcement with a filler without a dividing process per material.
Patent KR-20000027949-A (KR)
Title: Glass antenna system for vehicles
Inventor: CHEON CHANG YUL
IPC: H01Q1/32
Filed: 1998-10-29
Abstract: PURPOSE: A glass antenna system for vehicles is provided to equip an antenna with a hot wire which is connected to a ground point, in parallel, so as to improve receiving sensitivity of the antenna, by optimizing input impedance of the glass antenna. CONSTITUTION: A glass antenna system for vehicles comprises a glass antenna, an amplifier, and a ground connection point. The glass antenna is installed on a feeder distribution center, formed on an upper part of a rear-window glass having a hot wire. The amplifier amplifies an RF(Radio Frequency) signal received through the glass antenna, and is connected to the feeder distribution center by a coaxial cable. The ground point has a ground wire connected to the neighborhood of the feeder distribution center. One portion of the ground wire is connected to the ground point, and the ground wire is equipped in parallel having a predetermined interval with the hot wire, in a state of other portion is open. The amplifier receives an AM or an FM signal, and amplifies the signal by matching impedance.
Patent KR-19990007756-A (KR)
Title: 신규한 축산폐수처리 미생물 균주 및 그 피처리수의 생물학적용도
IPC: C12N1/00
Filed: 1998-10-30
Abstract: 본 발명은 신규한 축산폐수처리균주 및 그 처리수의 생물학적 용도에 관한 것으로 상기 균주는 돈사나 우사로부터 유출되는 축산폐수를 정화시키는 균주중에서 우점균을 분리 배양하고 이들 균주를 이용한 축산폐수의 피처리수의 용도를 제공하는바 생산된 피처리수는 탈취제와 비료로서의 용도를 제공한다.
Patent KR-19990045226-A (KR)
Title: 자기 기록 매체 상에 데이터를 기록하기 위한 장치
IPC: G11B5/024
Filed: 1998-11-12
Abstract: 본 발명은 자기 디스크의 오버라이트 특성을 확보하며, 파형 왜곡의 발생을 억제한다.  자기 디스크의 타겟 영역 상에 기록 데이터(갱신 데이터)가 기록된 경우, dc 소거를 행하여 요구되는 오버라이트 특성을 확보한다.  다음에, 일정한 주파수의 소거 데이터가 기록된다.  즉, 중간 파장 소거가 이루어진다.  그 후, 기록 데이터가 기록된다.  기록 데이터의 기록 전에 소거 데이터가 기록되기 때문에, 소거 데이터에 대응하는 자화 패턴이 밑바탕(bed)으로서 기록층(자성막) 위에 형성되고, dc 소거만을 행함으로써 파형 왜곡의 발생이 억제된다.
Patent KR-20000033641-A (KR)
Title: Plasma display panel using high frequency and driver and method for driving the same
Inventor: MOON SEONG HAK
IPC: H01J17/00
Filed: 1998-11-25
Abstract: PURPOSE: A plasma display panel using high frequency and driver and a method for driving the same is provided for increasing the discharge efficiency by way of an effective discharge. CONSTITUTION: A plasma display panel using high frequency and driver includes a discharge cell, a high frequency electrode(38), and an address electrode(40). The discharge cells are arranged in a matrix form. A scan signal for address discharge and a high frequency signal are applied in the high frequency electrode(38). A data signal for address discharge is applied in the address electrode(40). A discharge room is densified with discharged gas.
Patent KR-19990062729-A (KR)
Title: 연산장치 및 데이터처리장치
IPC: G06F7/02
Filed: 1998-12-02
Abstract: 메모리로 데이터의 연속일치횟수와 불일치데이터를 동시에 기록하고, 그 메모리의 데이터를 판독함으로서 이하의 데이터처리를 연속해서 행하는 것과 동시에 메모리로 기록된 최종데이터도 동시에 검출하는 것을 가능하게 하기 위해서, 데이터레지스터에 임의의 값을 설정하고, 비교명령에 의해서 실행유닛에서 데이터레지스터의 값과 데이터레지스터의 값과의 비교를 실행하고, 연속일치횟수와 불일치데이터를 출력하고, 검색횟수카운터의 값에서 비교명령을 종료함으로써, 연속일치횟수와 불일치데이터와 종료플래그신호를 메모리의 동일어드레스에 기록한다.
Patent KR-20000038056-A (KR)
Title: Card hanger and attaching type lessening instrument
Inventor: GO JONG TAEK
IPC: G09B1/06
Filed: 1998-12-03
Abstract: PURPOSE: A card hanger and an attaching type lessening instrument are provided to improve the education convenience by making it possible for cards to be attachable to a board. CONSTITUTION: An attaching type lessening instrument includes a card(10) formed in a letter, a number or a specific shape, and a lesson board(20) having a size that can attach a lot of the cards and made of a material same as that of the card(10). The card(10) is provided with a hole(16) and the lesson board(20) is provided with a holding part(26) in which the hole(16) of the card(10) is hooked so that the card can be hung on the board(20). Preferably, the card and the board are made of a felt.
Patent KR-20000041396-A (KR)
Title: Method for manufacturing capacitor of memory device
Inventor: HONG GWON
IPC: H01L27/108
Filed: 1998-12-22
Abstract: PURPOSE: A capacitor manufacturing method of a memory device is to form a diffusion prevention film with an excellent heat stableness for preventing a capacitor from degrading due to an oxidation of a barrier metal. CONSTITUTION: A method for fabricating a capacitor of a memory device comprises the steps of: forming a contact plug for a vertical interconnection; forming a barrier metal layer(205) on the contact plug; forming a lower electrode layer(206) on the barrier metal layer; forming a lower electrode pattern by etching the lower electrode layer and the barrier metal layer; depositing an insulating film(202) on the substrate whole surface with the lower electrode layer formed thereon by a high density plasma chemical vapor deposition method; wet etching the insulating film so that sidewalls of at least the barrier metal layer are coated; and depositing a (Ba,Sr)TiO3 dielectric(208) and an upper electrode(209).
Patent KR-20000043511-A (KR)
Title: Structure for cooling heater unit of microwave oven
Inventor: SON YEONG HAN
IPC: F24C7/00
Filed: 1998-12-29
Abstract: PURPOSE: A structure for cooling the heater unit of a microwave oven is provided to cool an upper and a lower heater at once through one outer air suction fan and to equally distribute outer air to the divided heater. CONSTITUTION: A cooling structure for a heater unit contain an outer air suction fan(22) and a vent hole. The outer air suction fan inlets outer air into a cabinet through a grill suction hole. The fan has a vent port separating and sending external air toward the upper and lower heater chambers. One side of the vent hole is connected to the upper heater chamber in order to form an upper heater cooling channel and the other side is connected to a lower heater chamber in order to form a lower heater cooling channel. The outer air suction fan connects the vent hole to the upper heater chamber by being placed around the upper heater chamber. The vent hole is connected to an additional air duct(25) leading to the lower heater chamber.