baber/WOPTO huggingface dataset:
Patent KR-20010006036-A (KR)
Title: 위성 통신 시스템의 이동 통신 단말기용 전력 제어 방법
IPC: H04W52/44
Filed: 1998-03-24
Abstract: 위성 통신 시스템의 이동 통신 단말기의 송신 전력 레벨을 제어하는 방법은 폐쇄 루프 성분 및 개방 루프 성분을 모두 포함한다. 폐쇄 루프 성분에 있어서, 기지국은 이동 통신 단말기로부터 수신된 신호의 강도에 기초하여 이동 통신 단말기의 전력 설정을 계산한다. 기지국은 이동 단말기의 송신 전력 설정을 결정할 때 위성 시스템의 전달 지연을 고려한다. 전력 제어 방법의 개방 루프 성분은 기지국으로부터 수신된 신호의 강도에 기초하여 이동 통신 단말기가 프레임마다 자체의 송신 전력 레벨을 조정할 수 있게 한다. 각 프레임에서 기지국으로부터 수신된 신호의 강도는 이전의 프레임에서 수신된 신호의 강도와 비교된다. 이동 통신 단말기의 송신 전력 레벨은 관측된 신호 강도의 변화에 따라서 역으로 조정된다.
Patent KR-20010006153-A (KR)
Title: 디스플레이 장치
IPC: G02F1/1337
Filed: 1999-01-28
Abstract: 본 발명은 이중-영역 형태의 일그러짐 네마틱 LCD 경우에 있어서, 더 나은 시각-각 의존도가 액정 분자가 균일하게 배향되는 한 면상에 복굴절 지연 포일(birefringent retardation foil)을 제공하여 얻어지고, 상기 지연 포일의 광축이 상기 배향에 평행한 평면에서 확장되는 것에 관한 것이다.
Patent KR-20010006336-A (KR)
Title: 향상된 신장성을 갖는 중합체 조성물
IPC: C09J123/08
Filed: 1998-04-14
Abstract: 본 발명은 균질상 에틸렌/α-올레핀 상호중합체, 왁스 및 증핵제를 포함하는 중합체 조성물에 관한 것으로, 이때 증핵제는 이를 함유한 중합체 조성물의 파괴시 신장률이 증핵제가 없는 비교 조성물의 파괴시 신장률보다 50% 이상 더 크도록 만드는 효과량으로 제공된다.  본 발명의 중합체 조성물은, 높은 결정화 개시 온도를 유지하면서 파괴시 높은 신장성을 요구하는 용도(예: 직물의 고속 피복물, 카페트 뒷판, 바닥 타일 및 시이트, 및 접착제)에서 유용할 것이다.
Patent KR-20010012468-A (KR)
IPC: C07C69/54
Filed: 1997-05-27
Abstract: Crude butyl acrylate streams, e.g., from the reaction of butanol and acrylic acid, are refined using a splitter distillation column to yield a butyl acrylate- and heavies-containing bottoms fraction and an overhead fraction containing dibutyl ether, butyl acetate, butanol and butyl acrylate. The bottoms fraction is then subjected to separation, e.g., by distillation, to separate heavies from the bottoms fractions and to recover butyl acrylate. A process for the production of butyl acrylate is also disclosed, which process comprises not only the above-mentioned refining steps but also includes the steps of withdrawing from the splitter distillation column the overhead fraction and distilling the overhead fraction to recover a bottoms stream containing butanol and butyl acrylate, at least a portion of which could be recycled for reaction with acrylic acid to make butyl acrylate, and recovering the separated heavies, at least a portion of which could be recycled to a reaction zone for the production of butyl acrylate. At least 10,000 lb(avoir) quantities of a butyl acrylate product comprising at least 99.8 wt.% butyl acrylate and containing not more than about 200 ppm butyl ether and not more than about 200 ppm butyl acetate are producible.
Patent KR-20010014217-A (KR)
Title: 저항기 및 그 제조방법
IPC: H01C17/00
Filed: 1998-07-02
Abstract: 본 발명은 저항기 및 그 제조방법에 관한 것으로, 설치 기판에 설치하였을 때의 설치 면적에서 차지하는 납땜 면적을 감소시킬 수 있는 저항기 및 그 제조방법을 제공하는 것을 목적으로 하는 것으로, 이 목적을 달성하기 위해서, 기판(21)과, 상기 기판(21)의 상면의 측부 및 측면의 일부에 걸쳐서 설치된 한 쌍의 제1 상면 전극층(22)과, 상기 제1 상면 전극층(22)에 전기적으로 접속하도록 설치된 한 쌍의 제2 상면 전극층(23)과, 상기 제2 상면 전극층(23)에 전기적으로 접속하도록 설치된 저항층(24)과, 적어도 상기 저항층(24)의 상면을 덮도록 형성된 보호층(25)을 구비하고, 상기 기판(21)의 상면의 측부 및 측면의 일부에 걸쳐서 설치된 한 쌍의 제1 상면 전극층(22)에 의해 저항기의 측면 전극의 면적이 작게 되도록 하여, 설치 기판 상의 납땜 부분을 포함하는 설치 면적의 감소를 도모할 수 있도록 한 것이다.
Patent KR-20010069005-A (KR)
Title: door and window frame made of cement extrusion with wrapping sheet and its door and windows
Inventor: IM JONG BOK
IPC: B28B11/04
Filed: 2000-01-11
Abstract: PURPOSE: Disclosed are an apparatus for lapping surface sheet of window frame using cement extrusion and window frame thereof to lap synthetic resin film to produce various pattern on the surface of window frame extruded by using cement material as main material by spraying high-temperature thermosetting adhesive and adhering synthetic resin sheet as maintaining object temperature of window frame 50deg.C or higher after curing with high temperature and high pressure. CONSTITUTION: The apparatus for lapping surface sheet of window frame using cement comprises mortar providing part to provide by making viscous phase as mixing cement, organic or inorganic based fiber thread, various chemicals for improving efficiency, vehicle with water at constant rate; screw transfer device(100) to extrude mortar provided from mortar providing part as outgassing; taper barrel part(110) to provide mortar provided from screw transfer device(100) to dies part by compressing more and more; dies part(120) to extrude mortar provided from taper barrel part(110) to the shape with hollow part by inherent core; curing bath(130) of high-temperature and high-pressure to cure by cutting extruded thing with constant length; lapping compression treatment part to store melted adhesive from adhesive melting bath(141) to coating bath of transfer roller part(143) lower part through providing pipe(142) as maintaining inner temperature of at least 40deg.C or higher.
Patent KR-20010069141-A (KR)
Title: Apparatus for timing recovery of digital tv
Inventor: HONG SEONG RYONG
IPC: H04N5/44
Filed: 2000-01-12
Abstract: PURPOSE: A timing recovery device of digital TV is provided to search for segment synchronism information and timing error information from two channels of an I and a Q channel by extracting the Q channel through a Hilbert filter. CONSTITUTION: A segment synchronism detection unit(403) searches for a correlation value of an inputted I channel signal with an already known segment synchronous signal format, extracts a Q channel signal with a phase inversed to 90 degree from the I channel signal to search for a correlation value with the already known segment synchronous signal format, adds the two correlation value to integrate for a time and searches for a maximum value of the integration value to discriminate a segment synchronous section, and outputs a control signal indicating a segment synchronous signal recovery. A timing recovery unit(404) is operated by the control signal supplied by the segment synchronism detection unit(403) and extracts timing error information from the I channel signal and the Q channel signal to perform a timing recovery.
Patent KR-20010073302-A (KR)
Title: An acrylic cover of fluorescent lamp and manufacturing method thereof
Inventor: KIM DEUK SOO
IPC: F21V1/26
Filed: 2000-01-13
Abstract: PURPOSE: An acrylic fluorescent lamp cover and its manufacturing method are provided to display colorlessness light at the designed pattern and to display the opal color at the remaining space. CONSTITUTION: The manufacturing method for acrylic fluorescent lamp cover includes the steps of sticking a designed sticker(6) on the lower glass(1), hydrofluoric acid processing by soaking the glass in the hydrofluoric acid solution for 10 minutes, and removing the sticker, molding the glass, cutting the glass with a predefined size, heat processing for 5 ¯ 8 minutes at 180°C, and forming the plate via the molding machine. At the molding processing, a gasket wraps around the glass and acrylic solution is filled within the upper glass and the lower glass and these glasses are firmly joined. After the hydrofluoric acid processing, the place where a sticker is removed is transparent and the remaining space(7) is opaque.
Patent KR-20010073505-A (KR)
Title: Method for public opinion census using keyphone system
Inventor: LEE YEONG GYEONG
IPC: H04M3/36
Filed: 2000-01-17
Abstract: PURPOSE: A method for surveying public opinion using a key phone system is provided to include an intention expressing function of a listener in a broadcasting function, so that a broadcasting party can directly recognize the intention of a receiving party. CONSTITUTION: A broadcasting function is arranged in a key phone system. An intention expressing function is arranged in the broadcasting function. While surveying public opinion using the intention expressing function, a broadcasting party directly recognizes the intention of a broadcasting-receiving party. Accordingly, a statistical result of the survey is recognized. The intention expressing function is performed, as the broadcasting-receiving party presses a corresponding number and the number information is inputted and stored in a storage unit built in the key phone system.
Patent KR-20000018233-A (KR)
Inventor: CHO KYO YOUNG
IPC: B27K3/34
Filed: 2000-01-24
Abstract: PURPOSE: A production method is provided to continuously maintain the gloss and fragrance even when the outer faces are worn by long use of four sticks. CONSTITUTION: A production method has the steps of: preparing the raw wood of four sticks for a game by cutting to a specific size as taking a bushclover wood having a specific thickness; washing by soaking in salt water for a specific time not to divide wood texture of the raw wood; the 1st fomenting for fomenting for a specific time in a pot containing water by dividing the raw wood in halves; the 1st drying for drying wet raw wood; trimming dried raw wood as the shape of four sticks for a game; the 2nd fomenting for fomenting for a specific time to infiltrate glutinous oil of glutinous rice to four sticks; the 2nd drying for drying the four sticks; coating with fragrance at least one between perilla oil and sesame oil on the outer face of the four sticks dried; the 3rd drying for drying the four sticks coated with oil under the sun.
Patent KR-20010076097-A (KR)
Inventor: AHN SEONG YONG
IPC: H01J11/38
Filed: 2000-01-25
Abstract: PURPOSE: A plasma display panel is provided, which generates discharge at the edge of luminescent cells to improve luminescence efficiency and reduces voltage drop due to a dielectric layer, reducing consumption power and stabilizing trigger discharge. CONSTITUTION: A plasma display panel includes a scan/sustain electrode(32Y) and a common sustain electrode(32Z) formed on an upper substrate to be arranged around discharge cells, and the first and second trigger electrodes(34Y,34Z) formed on the upper substrate to be placed between the scan/sustain electrode and the common sustain electrode. The plasma display panel further has a dielectric layer(50) formed on the upper substrate to cover the scan/sustain electrode, common sustain electrode, the first and second trigger electrodes. The thickness of the portion of the dielectric layer placed on the first and second trigger electrodes is thinner than the portion of the dielectric layer corresponding to the scan/sustain electrode and common sustain electrode.
Patent KR-20000053625-A (KR)
Inventor: ISHII HIDEHIRO
IPC: G11B20/12
Filed: 2000-01-26
Abstract: PURPOSE: A recording medium is provided to improve the operability when adding or rewriting information, by checking whether the after recording is executed or not with a bit rate information. CONSTITUTION: A recording medium(2) has a first recording area on which recording information is recorded, and a second recording area on which management information for managing the recording information is recorded. The second recording area includes a bit rate recording area for recording a bit rate.
Patent KR-20010082934-A (KR)
Title: Motion estimation method and device
Inventor: JUNG JAE WON
IPC: H04N19/94
Filed: 2000-02-22
Abstract: PURPOSE: A method for estimating motion and a device thereof are provided to improve coding efficiency by selecting a motion vector in reference to a zero vector and a predicting motion vector. CONSTITUTION: The first process(S1) determines a predicting motion vector by using a motion vector of neighboring block. The second process(S2) searches for a motion compensation error value by using a zero vector and the predicting motion vector. The third process(S3) compares the motion compensation error value using the zero vector with the first threshold value. The fourth process(S4) takes the zero vector as an ultimate motion vector in case the motion compensation error value using the zero vector is under the first threshold value. The fifth process(S5) compares the motion compensation error value using the predicting motion vector with the second threshold value in case the motion compensation error value using the zero vector is not under the first threshold value. The sixth process(S6) takes the predicting motion vector as the ultimate motion vector in case the motion compensation error value using the predicting motion vector is under the second threshold value. The seventh process(S7) takes a motion vector of minimum motion compensation error value as the ultimate motion vector in case the motion compensation error value using the predicting motion vector is not under the second threshold value.
Patent KR-20010084159-A (KR)
Title: Form of pole mount of the out door commumication Eguipment
Inventor: AHN JI MAN
IPC: H05K7/14
Filed: 2000-02-24
Abstract: PURPOSE: A pole mount structure is provided to achieve a stable system by preventing racks having electronic devices incorporated therein from moving or sliding. CONSTITUTION: A pole mount structure comprises upper and lower surfaces(12,13) which are coupled through a hinge(11-1) to a coupling plate(11) equipped with a coupling member(11-2) to be coupled to a rack; a coupling unit(10) coupled through a hinge(13-1) to the lower surface(13) and to an end of the upper surface(12) so as to form a square box configuration, and which has a space formed inside of the coupling unit; a stopper(20) coupled to the inner surface of the coupling plate of the coupling unit through a hinge(21) having a spring, in such a manner that the stopper is limited in a rotational motion in a vertical direction, wherein the stopper has a contact portion formed at the front surface of the stopper so as to contact a support pole; and a convex-concave portion(14-1) formed inside of a rear surface(14) forming the square box configuration, and which contacts the support pole.
Patent KR-20000062617-A (KR)
IPC: H01P1/213
Filed: 2000-02-24
Abstract: 본 발명은 도전층이 형성된 캐버티 및 캐버티 내에 배치된 십자형의 유전체 공진자를 포함하며 적어도 3개의 공진 모드를 갖는 유전체 공진기, 및 유전체 공진기에 결합하는 루프를 갖는 유전체 필터, 이를 포함하는 유전체 듀플렉서, 및 통신기 장치에 대한 것으로서, 입출력결합수단은 유전체 공진기의 공진 모드들 중에서 최초 단계의 공진 모드에 결합할 뿐만 아니라, 최초 단계와는 거의 역상인 h번째(h=2n+1; n은 자연수) 단계의 적어도 어느 하나의 공진 모드에 결합하거나, 또는, 입출력결합수단은 유전체 공진기의 공진 모드들 중에서 최종 단계의 공진 모드에 결합할 뿐만 아니라, 최종 단계를 k번째 단계라고 할 때, 최종 단계와는 거의 역상인 k-2n번째(n은 자연수) 단계의 적어도 어느 하나의 공진 모드에 결합함으로써, 두 개의 유전체 공진기를 사용하지 않고도 통과대역의 저역측 및 고역측 양방에 감쇄극이 형성될 수 있는 유전체 필터를 제공한다.
Patent KR-20010084770-A (KR)
Inventor: KIM GI JUNG
IPC: E01D19/04
Filed: 2000-02-29
Abstract: PURPOSE: An injection bridge bearing is provided to quickly compensate sinking and to apply to any types of bearings. CONSTITUTION: An injection bridge bearing contains: a storage chamber(36) formed in a lower plate(2); a communicating passage(37) connected with the outside; and a quick coupler(38) offered as a sealing device at the end of the communicating passage. An intermediate plate is raised by a fluid material(39) in the storage chamber. A recessed groove is formed between the lower plate and the intermediate plate. A key is stored in the recessed groove. The storage chamber is located under the key. A recessed slider is installed on the storage chamber to be loaded in a bearing instrument(3). A combining tap is formed in the recessed slider. A large nut is inserted in the lower plate.
Patent KR-20000062830-A (KR)
Title: 마스크층을 갖는 광자기 기록 매체
IPC: G11B11/105
Filed: 2000-03-11
Abstract: 광자기 기록 매체(10)는 투광성 기판(1), 기초층(2), 재생층(3), 마스크층(4), 기록층(5), 보호층(6)을 구비한다.  재생층(3)은 실온에서 면내 자화막이고, 150 ℃ 정도에서 수직 자화막이 되는 자성층이다.  또, 마스크층(4)은 실온에서 면내 자화막이고, 재생 온도보다 낮은 140 ℃ 정도에서 큐리 온도에 달하고, 그 큐리 온도에 달한 영역(40)만 자화가 삭감되고 그 이외의 영역은 면내 자화를 유지하는 자성층이다.  그리고, 큐리 온도에 달한 영역은 기록층(5)의 최단 도메인 길이에 대략 일치한다.  기록층(5)의 자구(50)는 마스크층(4)의 자화가 삭감된 영역(40)을 거쳐서 재생층(3)에 전사된다.  자구(50) 이외의 영역으로부터의 누설 자계는 면내 자화막을 유지하는 마스크층(4)에 의해 차단된다.  그 결과, 기록 밀도가 고밀도가 되어도 기록층(5)의 각 자구를 정확하게 재생층에 전사하여 그 전사한 자구를 검출할 수 있다.
Patent KR-20010091245-A (KR)
Title: Wireless phone having a function of data communication
Inventor: OH BYUNG HUN
IPC: H04M11/00
Filed: 2000-03-14
Abstract: PURPOSE: A wireless telephone having a data communication function is provided to have the data communication function by multiplexing a voice signal and a data signal and processing the multiplexed signal. CONSTITUTION: A handset(304) having a data communication function converts data received from a data terminal equipment or a voice inputted from a user into a certain format signal, multiplexes the converted signal, modulates the multiplexed signal, and transmits the modulated signal by wireless. A body of a wireless telephone having the data communication function demodulates the signal received from the handset(304) having the data communication function, demultiplexes the demodulated signal, converts the demultiplexed signal into original data or voice signal, and transmits the converted signal to a data network or a telephone network.
Patent KR-20010006874-A (KR)
Inventor: YUKI YUKIHIRO
IPC: F16K31/11
Filed: 2000-03-27
Abstract: PURPOSE: To attach a misoperation prevention cover to a select type operation element in a fluid pressure apparatus such as a solenoid valve having a select type operation element with a handle for manual operation. CONSTITUTION: In this apparatus, a select type operation element having a handle 5a for manual operation on its top part is covered with a misoperation prevention cover 6 comprising a base part 10 with an attachment part 14 to be fixed to a casing and a lid part 11 integrally extending from the base part 10 through a flexible bending part 12. By bending the lid part 11 at the bending part 12, the cover 6 can be freely opened and closed between a closed position wherein the handle 5a is covered and an open position wherein the handle 5a is open.
Patent KR-20000053809-A (KR)
Inventor: KIM YOUNG JOON
IPC: A63B53/04
Filed: 2000-04-17
Abstract: PURPOSE: A sand wedge for low resistance is provided, which is used for getting away from a sand trap, a bunker of a golf course, makes possible an easy and accurate shot with low resistance. CONSTITUTION: A low resistance sand wedge is produced by forming grooves at regular intervals and regular depths to minimize resistance, and forming an entire outward appearance as an oval shape by making the back side into a streamline shape and connecting a separated side by providing oval spaces. The grooves also decreases entire weight of a head and can stand any shock in addition to reducing resistance.
Patent KR-20000049698-A (KR)
Inventor: YOO JAE SEOK
IPC: G06F17/00
Filed: 2000-04-24
Abstract: PURPOSE: A rental service and demander control system for video on demand on intranet and internet is proposed to enable demander of video or motion picture to freely watch the picture during a definite period requested by the demander like a real world video rental store. CONSTITUTION: A rental service and demander control system for video on demand is composed of web browser, provider's control unit, motion picture data server, and demander's device. A web browser is given to a demander by service providers. A provider's control unit controls kind of motion pictures and demanded period on the menu of web browser. After receiving a demander's data from the menu, the provider's control unit commands data server of motion pictures to deliver a motion picture adequate to demander's request when executing a program in a demander's device. A motion picture data server manages a web, delivers motion pictures to a demander after receiving an order from the control unit, and controls demander's computer. A demander's device receives and stores motion picture and command data of a definite period, and executes web browser on a monitor of television or the device.
Patent KR-20010098243-A (KR)
Inventor: KANG DONG JUN
IPC: F24F13/20
Filed: 2000-04-29
Abstract: 본 발명은 공기조화기에 관한 것이다. 본 발명은 일체형 공기조화기에서 공기조화를 위한 공간으로 토출되는 기류를 형성하기 위해 터보팬(60)을 사용한 것이다. 상기 터보팬(60)은 기류를 형성하기 위한 구성인 쉬라우드(66)가 일체로 구비되어 있어, 별도로 기류의 형성 및 안내를 위한 부품이 필요없게 된다. 따라서 터보팬(60)의 회전방향에 대해 원심방향으로 토출되는 공기는 상기 터보팬(60)의 상방에 구비된 토출가이드(85)의 토출부(87) 및 가이드부(89) 전체로 전달되어 토출그릴(37)의 전체 부분을 통해 토출될 수 있다. 이와 같은 본 발명에 의하면 터보팬(60)의 주위에 별도로 기류를 형성하고 안내하기 위한 부품이 필요없게 되어 전체적으로 구성이 간단하게 되고, 터보팬(60)에 의해 형성되는 기류가 토출그릴(37)을 통해 균일하게 토출된다.
Patent KR-20010105095-A (KR)
Inventor: PARK CHAN WOO
Filed: 2000-05-19
Abstract: 본 발명은 뽕나무, 홍삼, 오미자 및 맥문동의 추출물을 포함하여 이루어지는 당뇨병 치료제 및 기능성 식품에 관한 것이다. 
     본 발명에 의하면, 뽕나무 약재만을 사용한 당뇨 치료제에 수반되어 나타나는 수축기 혈압상승, 확장기 혈압저하 등의 부작용을 제거, 완화시킨 약제 및 기능성 식품을 얻을 수 있다.
Patent KR-20000054183-A (KR)
Inventor: HONG BONG HEE
IPC: H04W4/02
Filed: 2000-05-25
Abstract: PURPOSE: A method for supplying a cellular phone terminal with map information, is provided to recognize positions between users of cellular phones, combining with an e-map, and to call a retrieved structure and map information on a desired structure. CONSTITUTION: A method for supplying a cellular phone terminal with map information, comprises the steps of: confirming whether a user is accessed to an e-map server via a wireless communication network; if a transceiver requests for distance recognition, making the e-map server firstly retrieve position information by a position recognition server; transmitting the first retrieved result to the user in a raster image type; discriminating query information for obtaining necessary detail map information from a raster image displaying position and distance of the transceiver; if requesting for the detail map information, secondly retrieving map information between the position recognition server and the e-map server; and transmitting the second retrieved result to the user in the raster image type.
Patent KR-20010112750-A (KR)
Title: A inorganic material for acclimation use of male chemosterilant mineral
Inventor: JANG SUNG WAN
IPC: C09K17/50
Filed: 2000-06-15
Abstract: A flame-retardant polyamide that is the polycondensation product of at least one dicarboxylic acid, at least one diamine and a flame-retarding carboxyphosphinic acid monomer, said polyamide comprising between about. 10 and about 1.0 % by weight of phosphorous. The polyamide can be formed into fibers for further fabrication into flame-retardant articles and textiles or directly molded or extruded into shaped articles.
Patent KR-20010112993-A (KR)
Title: Auto dialing control process
Inventor: CHA YOUNG CHEON
IPC: H04L12/66
Filed: 2000-06-15
Abstract: An isocyanate-containing, one-pack type, cold-setting, moisture-curable composition which has excellent storage stability and rapidly cures to give a cured article with excellent flexibility without using a plasticizer. The composition comprises: (A) an isocyanate compound having such a structure that each isocyanate (NCO) group in the molecule has a secondary or tertiary carbon atom bonded thereto; and (B) a ketimine which has a ketimine (C=N) bond derived from a ketone or aldehyde and an amine and has a branching carbon or ring-member carbon atom bonded in the alpha-position with respect to at least one of the ketimine carbon and nitrogen. As the isocyanate compound (A), a urethane prepolymer having the above structure is also preferably used.
Patent KR-20020001145-A (KR)
Title: Method of manufacturing a transistor in a semiconductor device
Inventor: JU GWANG CHEOL
IPC: H01L21/8242
Filed: 2000-06-26
Abstract: PURPOSE: A method for fabricating a transistor of a semiconductor device is provided to prevent a thin SiO2 layer formed on a semiconductor substrate during a process for forming Ta2O5 layer or a succeeding thermal process, remove Ta chemicals from the Ta2O5 layer, and improve an electrical characteristic of a transistor by oxidizing impurities. CONSTITUTION: The first nitride layer(20) is formed on a surface of a semiconductor substrate(10) in order to prevent a thin silicon oxide layer formed on the surface of the semiconductor substrate(10). A Ta2O5 layer(30) is formed on the first nitride layer(20) under an O2 atmosphere of temperature of 400 to 500 degrees centigrade. An annealing process of the Ta2O5 layer(30) is performed. The process for forming the Ta2O5 layer(30) and the annealing process are performed repeatedly to form a desired thickness. The second nitride layer(40) is formed on the Ta2O5 layer(30). A gate(50) and an upper electrode(60) are formed on the second nitride layer(40). A source/drain(70) is formed thereon.