baber/WOPTO huggingface dataset:
Patent KR-19990063830-A (KR)
Title: 반도체 디바이스
IPC: C25B11/00
Filed: 1996-10-09
Abstract: 반도체구상결정에 광기전력발생부와 한쌍의 전극을 형성한 1 또는 복수개의 구상반도체소자를 주체로 하는 반도체디바이스이고, 반도체광촉매, 포토다이오드 또는 태양전지로서의 반도체 디바이스와, 반도체 구상결정에 pn접합과 한쌍의 전극을 형성한 1 또는 복수개의 구상반도체소자를 주체로 하는 반도체디바이스로서, 발광다이오드, 각종의 다이오드 또는 디스플레이패널로서의 반도체디바이스를 개시한다.  도시된 반도체광촉매(1)에 있어서는 n형실리콘 반도체의 구상결정(2)에 p형확산층(6)과, pn접합(7)이 형성되고 광기전력발생부(16)을 포함하는 마이크로광전지(17)이 구성되며, 구상결정(2)의 중심을 끼우면서 대향하는 한쌍의 전극(14,15)과 SiO 2 의 피막(9)과, 광촉매기능이 있는 TiO 2 의 피막(10)이 형성된다.
Patent KR-19990067199-A (KR)
IPC: D21H17/68
Filed: 1996-11-08
Abstract: The invention relates to a process for the production of paper from a suspension of cellulose containing fibres, and optional fillers, which comprises adding a water-soluble cationic or amphoteric branched acrylamide-based polymer and an anionic aluminium-containing silica sol to the suspension and forming and draining the suspension on a wire.
Patent KR-19990071468-A (KR)
Title: 증기제어시스템을구비하는액체전자사진시스템
IPC: G03G15/11
Filed: 1996-10-18
Abstract: 본 발명은 증기의 방출을 감소시키기 위하여 증기 제어 시스템을 구비하는 전자 사진 시스템에 관한 것이다.  증기 회수 기구는 기화된 담체의 적어도 일부를 회수하여, 증기의 유입구와 배출구를 구비하는 컨테이너로 전달하며, 상기 컨테이너는 기화된 담체의 온도 보다는 낮지만 0℃ 보다는 큰 온도를 가지는 냉각액을 함유한다.  냉각액의 표면 아래 지점에 위치한 증기 유입구는 기화된 액체가 상기 냉각액으로 인하여 기포를 일으키고 그 안에서 응축되는 결과를 가져온다.  냉각액은 물과 섞이지 않으며, 바람직하게는 액상 담체이다.  기계적인 저항 장치는 기포의 체류 시간을 증가시키고 보다 기포 크기가 보다 작게 한다.
Patent KR-19990071841-A (KR)
Title: 회절 격자 형성을 위한 고리형 간섭계 구조
IPC: G02B5/18
Filed: 1996-12-02
Abstract: 감광성 물질(40)에 회절 격자와 같은 구조를 형성하기 위한 방법 및 장치를 개시한다.  그 방법 및 장치는 적어도 두 개의 간섭성 광 빔(33,38)을 형성하고, 간섭성 빔들이 구조 스테이징 영역(45)에서 간섭하도록 실질적으로 동등한 경로를 따라 일련의 반사 소자(35,37) 주위에 역 전파 방법으로 그 빔들을 반사시킨다.  구조 스테이징 영역은 그리고 나서 개선된 질을 갖는 회절 구조 등을 형성하는 데에 이용될 수 있다.
Patent KR-19990077359-A (KR)
IPC: A46D1/00
Filed: 1997-01-06
Abstract: The plastic bristle (5) proposed consists of a core (6) of parallel plastic filaments (7) connected to each other, plus a plastic sheath (8) surrounding the core (6). At the brushing end (5a) of each bristle (5), the filaments (7) protrude out of the sheath (8). This is achieved by dressing the bristles (5) at the brushing end (5a), the length of the sheath (8) being reduced at the same time by this mechanically operation.
Patent KR-19990082445-A (KR)
IPC: C07J71/00
Filed: 1996-12-04
Abstract: Process for preparing the compound 11beta-21-dihydroxy-2'-methyl-5'betaH-pregna-1,4-dieno[17,16-d]oxazoline-3,20-dione of formula (I):which comprises adsorbing said compound, contained into an aqueous solution resulting from fermentation broths or process streams, on an adsorbent polymeric resin having a styrenic or acrylic matrix and subsequently desorbing the said compound by eluting the resin with suitable mixture of water with a water-miscible organic solvent.
Patent KR-19990087116-A (KR)
IPC: F41B5/14
Filed: 1997-02-14
Abstract: The bow consists of a central body and two branches to which the bowstring is attached. The body is made from front and rear sections (2, 3) which are joined together by matching surfaces. The two sections are of different materials or materials which have different densities, such as plywood for the front section and plastic or metal for the rear one. The rear face (2a) of the front section (2) is curved in the middle (2') and straight at its two ends (2"), and the body has a shock absorbing strip (9) between the two sections. The supports (10) to which the two branches are attached are located on the front section of the body, while accessories such as an arrow rest and sight are mounted on one side of the rear section.
Patent KR-19990087268-A (KR)
Title: 더모토가 네아폴리타나로부터의 알칼리 포스파타아제의정제 및 특징화 방법
IPC: C12N9/16
Filed: 1997-02-25
Abstract: 본 발명은 일반적으로 알칼리 포스파타아제에 관한 것이며, 특히 호고열성 미생물로부터의 알칼리 포스파타아제에 관한 것이다.  본 발명은 또한 호고열성 알칼리 포스파타아제를 정제시키는 방법에 관한 것이다.
Patent KR-20000064541-A (KR)
Title: 전기백열램프를제조하기위한방법
IPC: H01K1/18
Filed: 1998-02-10
Abstract: 본 발명은 적어도 하나의 백열 필라멘트(31) 및 눈부심 억제 장치(20)를 가지는 전기 백열 램프를 제조하기 위한 방법에 관한 것이다.  본 발명에 따라, 상기 방법의 경우에, 백열 필라멘트(31)의 단부(31a)는 눈부심 억제 장치(20)의 에지상 노치(23)에 끼워지고 노치(23) 지역에서 눈부심 억제 장치(20)의 재료를 용융함으로써 눈부심 억제 장치(20)가 용융되어, 용융물은 노치(23)에 배열된 백열 필라멘트 단부(31a)를 적시고 백열 필라멘트 단부(31a)는 용융물이 응고된후 눈부심 억제 장치(20)의 응고 재료(20a)에 파묻친다.
Patent KR-19990087644-A (KR)
Title: 메모리 셀 장치 및 그의 제조 방법
IPC: G11C11/56
Filed: 1997-04-09
Abstract: 스토리지 셀로서 수직형 MOS 트랜지스터를 포함하는 스토리지 셀 장치에 있어서, 멀티-레벨의 프로그래밍에 의해 트랜지스터의 적어도 세 개의 상이한 임계 전압 값으로 데이터는 저장된다.  제 1 임계 전압 값은 두꺼운 산화막 트랜지스터의 게이트 유전층의 두께에 의해 형성되고, 제 2 임계 전압 값은 상이한 채널 도핑에 의해 형성된다.  상기 장치는 스토리지 셀당 2F 2 의 표면 영역 요구를 가지고 형성된다.
Patent KR-20000064655-A (KR)
IPC: C12N9/64
Filed: 1997-03-12
Abstract: The invention involves dimeric forms of the protein known as fibroblast activation protein alpha, or "FAP alpha " and its uses.
Patent KR-20000011149-A (KR)
Title: Method for making an electric sheet steel with oriented grains for the manufacture of transformer magnetic circuits in particular
Inventor: BAVAY JEAN-CLAUDE
IPC: C22C38/00
Filed: 1998-03-18
Abstract: PURPOSE: A method for improving the magnetic characteristic of a steel sheet is provided to re-heat a slab or a strip in a temperature of under 1350°C before hot rolled pressing. CONSTITUTION: The invention concerns a method for making an electric sheet steel with oriented grains characterized in that the slab or strip has the following composition:less than 0.1 % carbon, more than 2.5 % silicon, less than 0.006 % sulfur, more than 0.002 % manganese, more than 0.008 % aluminium, more than 0.004 nitrogen, more than 0.02 % copper, less than 0.02 % tin. The method consists in subjecting the above slab to temperature less than 1350°C and hot rolling such that:the percentage by mass of non-precipitated sulfur in the form of coarse particles of average diameter not less than 300 nanometers (nm) is higher than 0.004 %; the percentage by mass of precipitated nitrogen only on the form of fine particles of average diameter less than 100 nm is less than 40 % of the total percentage by mass of nitrogen.
Patent KR-20000022219-A (KR)
Title: Additive composition for delivering benefit agent and cleansing bars containing the additives
Inventor: FARRELL TERENCE JAMES
IPC: A61K8/00
Filed: 1997-02-21
Abstract: PURPOSE: Novel chip compositions comprising alkylene glycol, benefit agent and fumed silica and bar compositions containing mixtures of the chips and chips containing defined surfactant systems are provided. CONSTITUTION: Chip compositions comprise: (a) 40% to about 80% by wt. of the chip composition of a polyalkylene glycol having a molecular weight greater than about 4,000; (b) 10-40% by wt. of the chip composition of benefit agent(e.g., silicone); (c) 0.01-10% by wt. of chip composition fumed silica; (d) 0.0-10% by wt. of chip composition water; and (e) 0-15% by wt. of chip composition C8 to C22 fatty acid. An extruded bar composition is produced by using about 20-40% of the chip compositions and about 80-60 % chips comprising about 5-90% by wt. of a surfactant system being selected from the group consisting of soap, anionic surfactant, nonionic surfactant, amphoteric surfactant, zwitterionic surfactant, cationic surfactant and mixtures thereof.
Patent KR-20000050407-A (KR)
Inventor: KIM YEON HOON
IPC: B66B1/00
Filed: 1999-01-08
Abstract: PURPOSE: A voice notification apparatus and a voice notification method of elevator are provided to achieve improvements enabling the voice information to be easily changed while arranging an additional voice recording unit. CONSTITUTION: A voice notification apparatus comprises an elevator controller(100) for controlling operation of elevator, transmitting/receiving a voice notification command signal, and outputting a broadcast command signal, a voice notification unit(110) for receiving the voice notification command signal of the controller(100) and outputting the corresponding voice information via a speaker, a car terminal controller(130) for receiving in serial the operation state of the elevator controller(100), transmitting in parallel the received operation state, and outputting an operation signal according to the broadcast command signal output from the unit(100), and a car operation controller(140) for storing voice signal corresponding to the information to be notified by users and outputting the voice signal via a speaker in accordance with the operation signal output from the elevator controller(100).
Patent KR-20000051613-A (KR)
Inventor: NAKAMURA TSUMORU
IPC: C02F1/28
Filed: 1999-01-25
Abstract: PURPOSE: A method for treating desulfurization waste water discharged from a waste gas desulfurization facility for absorbing and separating sulfur oxide gas in a combustion waste gas by using an alkaline agent as an absorbent is provided which can stably operate waste treatment processes for a long period of time and does not need to supply gypsum from the outside. CONSTITUTION: A method comprises the steps of setting a solid-liquid separator for subjecting gypsum to solid-liquid separation in a line for extracting a concentrated waste water drained from an evaporator; separating gypsum from concentrated waster water and regenerating in the solid-liquid separator; adding all or a part of the regenerated gypsum to the evaporator or to the waste water fed to the evaporator; regenerating with gypsum formed in a desulfurization facility by discharging out of a system or returning to the desulfurization facility.
Patent KR-20000055359-A (KR)
Inventor: CHO SEONG BUM
IPC: E04H13/00
Filed: 1999-02-05
Abstract: PURPOSE: A device for preventing the dewing of a mound type bone powder laid gravestone is provided to worship an ancestor in a clean state by preventing dewing regardless of a weather condition in a sitting portion of the mound type bone powder laid gravestone. CONSTITUTION: A loop stone unit(50) is installed having a certain width to form an opening/closing stone gate(55) on one side of the ground. A base bed having plural layers such as gravels, yellow earth, plaster and so on is formed to embed a sitting place(60). A side wall portion(42) forms a supportive side wall(45) having a plaster portion(44) and a sitting portion(40) consisted of a ceiling stone. A circulation portion(10) is formed on the outside face of the sitting portion with one layer or more than one layer of plural piling up nets(12). A mound is formed with the yellow earth between the circulation unit and the loop stone unit and a turfed mound part(70) is formed. Thus, all the works of the dewing preventive device is completed.
Patent KR-20000056429-A (KR)
Inventor: SONG BONG YONG
IPC: H04M19/00
Filed: 1999-02-22
Abstract: PURPOSE: A method for tracking positions of a wireless communication terminal device is provided to expand service regions by combining a global positioning system(GPS) signal, a pilot signal, and round-trip delay(RTD) information to calculate the positions, and to exactly track the positions by making a position server correct a synchronous error of the pilot signal. CONSTITUTION: A method for tracking positions of a wireless communication terminal device comprises the steps of: making the wireless communication terminal device measure position tracking information by using a wireless communication network and a global positioning system(GPS); transmitting the measured information to a position server; and making the position server find the positions of the wireless communication terminal device by using the information. The step of measuring the position tracking information comprises the steps of: measuring pseudo ranges from receiving GPS satellites; deciding whether numbers of the GPS satellites are sufficient for tracking the positions; if not, additionally measuring signal strength of signals from peripheral wireless communication base stations and a time difference of arrival(TDOA), then using the measured signal strength/the TDOA with the measured pseudo ranges as the position tracking information; and if the numbers are sufficient, using the measured pseudo ranges as the position tracking information.
Patent KR-20000073412-A (KR)
Inventor: YOON YEONG SUN
IPC: H04M1/23
Filed: 1999-05-10
Abstract: PURPOSE: An automatic voice-dialing method of a portable terminal is provided to register voice instructions corresponding to each key in order to perform a dialing process for telephone numbers not registered, and to make menu in dialing of the input of a re-dial key and numeric keys with a voice recognition instruction in order to perform automatic dialing. CONSTITUTION: If a user says one of preset instructions in a hook-off state, a voice recognition unit and a microcomputer inside a portable terminal are operated to recognize the instruction to search whether the instruction is set up. If the searched instruction is for automatic dialing, the user says a registered name of a desiring preset telephone number at a search menu. And the user searches voice information of the said name in the portable terminal for automatically dialing a preset telephone number. Speech is performed after connection. If the searched instruction is for re-dial, a telephone number lastly dialed is read for dialing, and speech is performed after connection. And if the searched instruction is for voice dialing, the user says a desiring telephone number in a voice at a dial menu. The voice recognition unit and the microcomputer inside the portable terminal recognize the telephone number, and the recognized telephone number is dialed. Then speech is performed after connection.
Patent KR-19990064956-A (KR)
Title: 발신자 아이디 표시 기능을 구비하는 전화 장치
Filed: 1999-05-28
Abstract: 본 발명은 사용자가 전화상의 디스플레이 장치를 보지 않고서도 발신자에 관한 정보를 알 수 있도록 하는 전화 장치에 관한 것이다.  본원 발명에 따르면, 전화 장치에 메모리가 제공되는데, 여기에는 사용자의 입력에 의해 다수의 통화자 관련 데이터 (예를 들어, 통화자의 전화 번호 및 이에 대응하는 이름)이 사전에 저장된다.  또한, 상기 메모리에 저장된 다수의 통화자 관련 데이터중 선택된 적어도 일부에 대하여는 대응하는 착신 신호 (예를 들면, 여러 가지 착신음중 선택된 착신음, 무음 램프 신호, 무음 진동 신호, 이러한 신호들이 복합된 신호 등)가 지정되어 있다.  만일 수신되는 신호의 통화자 ID가, 상기 메모리에 사전에 저장되어 있으며 대응하는 착신 신호가 지정되어 있는 통화자 관련 데이터에 정합되는 것으로 판별되는 경우, 그 대응하는 착신 신호가 선택되어 생성되므로, 사용자는 선정된 통화자에 대하여 디스플레이를 보기 전에도 발신자를 식별하는 것이 가능하게 된다.
Patent KR-20000005824-A (KR)
Inventor: WILLIAMS RICHARD K
IPC: H01L27/02
Filed: 1999-06-02
Abstract: PURPOSE: A vertical trench-gate power MOSFET is provided to reduce an on-resistance by reducing a width of a MOSFET cell. CONSTITUTION: The vertical trench-gate power MOSFET comprises at least one MOSFET cell formed in a semiconductor chip. The MOSFET cell(30) has a stripe shape of predetermined length and width, and the stripe is disposed between opposed gate sections(304A, 304B) and has a most upper surface corresponding to a surface of the chip. The gate sections are formed in a trench, respectively. Furthermore, the MOSFET cell has a source region of a first conductive type disposed adjacent to the most upper surface, a body region of a second conductive type disposed below the source region and having a channel region adjacent to a trench wall, a drain region of the first conductive type adjacent to the body region, and a heavily-doped region in the body region. The heavily-doped region is the second conductive type. The MOSFET cell further comprises a contact part having a dopant density more than a remnant dopant density of the body region, extending along the length of the cell and extending to a surface of the cell.
Patent KR-20010001307-A (KR)
Inventor: KIM HEUNG GUK
IPC: E01F9/011
Filed: 1999-06-03
Abstract: PURPOSE: A vehicle passage controller is provided to be conveniently replaced and to avoid an accident by giving a warning signal to a driver without easily getting dirt or damaged. CONSTITUTION: A rod is composed of a combination portion(122), a body portion(124) and a neck portion(126) and separably installed on a support plate. The combination portion is inserted in the support plate(110) and an installation groove. The neck portion is arranged between the combination and body portions, having a smaller diameter than the body portion. A spiral line(116) is formed along an inner circumferential face of the installation groove. A divided nut is prepared between the rod and support plate to fix the combination portion of the rod. Accordingly, the rod is readily replaced even if damaged.
Patent KR-20010001726-A (KR)
Inventor: YANG DO YEONG
IPC: H04N21/431
Filed: 1999-06-08
Abstract: PURPOSE: An apparatus for selecting added information in a video display is provided to extract data including the added information from inputted broadcasting signals to detect a prerecorded added information flag in the extracted data, and to generate an icon corresponding to the detected added information flag to display the icon on a screen, thereby easily performing the corresponding added information when a user selects the icon. CONSTITUTION: A demultiplexer(102) extracts an audio signal, a video signal, and a data signal including added information from broadcasting signals inputted through a predetermined channel. An added information flag detector(112) detects a prerecorded added information flag from the output data signal. An icon generator(116) generates an icon according to a predetermined control signal. A display unit(110) displays the generated icon. A controller(118) receives information on the output added information flag, and controls the icon generator(116) and the display unit(110), to generate/display an icon corresponding to the information. An added information processor(114) processes added information selected by a user under control of the controller(118).
Patent KR-20010002579-A (KR)
Inventor: CHOI CHEOL SU
IPC: C23C14/35
Filed: 1999-06-16
Abstract: PURPOSE: A magnet for improving targeting effect of sputtering equipment is proposed to solve a disadvantage of known art relating low efficiency of target due to a concentrated consumption of specified part of the magnet. CONSTITUTION: A magnet for improving target performance of a sputtering equipment is featured by arranging multiple magnets in "S" line at equal distances within a magnet molding frame. The frame is formed as "S" shape along its diameter and has a rotating shaft at its main area. The arrangement effects to generate and distribute plasma all over front side of a circular metal plate comprising the target. As a result, Ar atoms introduced into a processing chamber converse into ionic state to uniformly strike and consume all over the entire area of the metal plate.
Patent KR-20010003019-A (KR)
Inventor: SUNG EUN SUK
IPC: H04N7/015
Filed: 1999-06-19
Abstract: PURPOSE: A small window for a digital television is provided to cover the whole screen through only the small movement of a pointer when the pointer is moved in the small window by displaying a small window to a side of a screen of the digital television. CONSTITUTION: The small window for a digital television includes following units. A small window(3) for displaying a pointer is displayed to a side of a screen(2) of the digital television. When the pointer is moved in the small window(3), a movement of the pointer is completed at the whole screen(2). At this time, a vertical and a horizontal scrolls(4) and(5) for sensing the movement of the pointer are mounted to a vertical and a horizontal surfaces of the small window(3). The digital television displays the movement of the pointer in the whole screen according to the movement of the pointer in the small window(3). Preferably, the mounting position of the small window is a lower part of right of the screen(2).
Patent KR-20010003174-A (KR)
Inventor: KIM HAE SEON
IPC: A01K97/04
Filed: 1999-06-17
Abstract: PURPOSE: A bait which main ingredient is a sea mussel and a producing method are provided, which are economical due to the sea mussel which is cheap and can allure more fish than others. CONSTITUTION: The producing method for a bait which main ingredient is a sea mussel is comprised of: pulverizing the whole sea mussel which is quick-frozen; removing moisture after or before pulverizing; quick-freezing after putting the pulverized one into the mold; and packing after cutting the same into the suitable size.
Patent KR-20010009092-A (KR)
Inventor: CHO KYU SUP
IPC: F21L4/00
Filed: 1999-07-07
Abstract: PURPOSE: A flash lamp and gas cartridge assembly is provided to enable a user to promptly correspond at site and use the assembly conveniently by integrating a flash lamp and a gas injector. CONSTITUTION: A rod shaped flash lamp includes a lamp(3) at the leading end, a body(7) for containing batteries(6) and a switching section. The body(7) has a space for receiving batteries and electrodes within it. Electrode plates(11) are coupled to a gas cartridge receiving box(8) for allowing a current to flow from the batteries to the lamp(3). The gas cartridge receiving box(8) is detachably screwed with the body(7). A rotator(9) is installed at the end of the gas cartridge receiving box(8) to guide an ejection gas to an injection nozzle(10) which is installed at the end of the rotator(9) to eject the gas. A safety lock is installed at the joint of the rotator(9) and the cartridge receiving box(8) to adjust the rotation of the rotator(9).
Patent KR-19990078790-A (KR)
Title: 계수 계량 결과 값의 시각적 표시와 청각적 안내 장치 및 방법
IPC: G06M3/06
Filed: 1999-08-07
Abstract: 본 발명은 지폐, 동전 등의 유가 증권 혹은 전표, 티켓(Ticket) 등 다양한 피계수계량물들의 계수 및 계량 장치의 외부 부가 장치로서 혹은 계수 계량 장치의 내장 모듈의 형태로서 계수 계량의 결과값(매수, 총 금액, 개수, 중량, 부피등의 다양한 목적에 부합하는 계수 계량의 결과값)을 시각적으로 표시 및 청각적으로 안내하는 기능의 동시 수행 혹은 사용자 선택에 의한 선별적 기능을 수행하는 장치 및 방법에 관한 것으로서, 장치의 전체적 기능 및 동작을 제어하는 주제어부; 상기 주제어부의 제반 기능을 수행하기 위한 프로그램이 저장 기록되어진 프로그램 메모리부; 사용자를 위한 시각적 표시 기능 혹은 청각적 안내 기능의 동시 제공 혹은 선별적 제공 선택 및 장치의 다양한 제어 기능들의 운용 조작을 위한 운용 조작부; 피계수계량물의 결과 값을 상기 장치와 연결하여 전달하는 인터페이스부; 사용목적에 적합하도록 사전 저장 기록된 음원 저장부; 상기 음원 저장부로부터 추출된 음원의 합성을 수행하는 음절 합성부; 상기 음절 합성부로부터 만들어진 음절의 청각적 안내를 위한 스피커 구동부; 상기 스피커 구동부에 의한 직접적 청각적 안내를 수행하는 스피커; 피계수계량물의 결과 값의 시각적 표시를 위한 표시 장치 구동부; 상기 표시장치 구동부에 의한 시각적 표시기능을 수행하는 표시 장치부; 상기 각 부분의 구동을 위한 전원부등으로 구성되어 진다.
Patent KR-20000017196-A (KR)
Inventor: MAEDA GEI
IPC: C03C3/093
Filed: 1999-08-09
Abstract: PURPOSE: Glass is provided which has a high glass transition point and coefficient of thermal expansion, resistance and fracture toughness. CONSTITUTION: The glass useful as a substrate for color PDP, plasma address liquid crystal, field emission display comprises 4.5- 65 weight % of silicon oxide, 10- 20 Weight % of alumina, 1- 6 weight % of boric oxide, 2, 5 weight % of magnesium oxide, 1- 10 weight % of calcium oxide, 0- 4.5 weight % of strontium oxide, 0-2 weight % of barium oxide and 10- 17 weight % of a compound of magnesium oxide, calcium oxide, strontium oxide and barium oxide. The glass composition is melted at 1,550- 1,650°C for 4- 5 hours in platinum crucible, followed by casting to give the glass sheet having more than 0.70 MPa.1/2 of fracture toughness, below 2.65 of specific gravity, more than 600°C of glass transition point, 75x10 -7- 95x10 -7/°C of average thermal expansion coefficient at 50- 350°C.
Patent KR-20010019713-A (KR)
Inventor: HAN GWANG HUI
IPC: H01L27/04
Filed: 1999-08-30
Abstract: PURPOSE: A method for manufacturing a metal-oxide-semiconductor(MOS) transistor for preventing electrostatic discharge is provided to prevent a gate oxide layer from being broken when an abnormal high voltage is applied, by forming a long current path in a small area. CONSTITUTION: After a gate oxide layer, a polycrystalline silicon layer and a nitride layer are sequentially deposited on a substrate(1) and patterned to form a gate(2), impurity ions are implanted in to the substrate at a side of the gate to form a source/drain(4,3). After a photoresist layer is applied on the entire structure and a pattern is formed to expose a part of a drain region adjacent to the side of the gate, a predetermined depth of the exposed drain region is etched to extend a surface area of the drain. Impurities of the same conductivity type as the drain are implanted into the etched region of the exposed drain to lengthen a current path through the drain. The photoresist layer is removed and a nitride layer is deposited on the gate, the source and the drain. The nitride layer is dry-etched to form a gate sidewall(5). After an insulating layer is deposited and a contact hole is formed to expose a part of the source/drain, a source/drain electrode is formed in the contact hole.