baber/WOPTO huggingface dataset:
Patent KR-20040092758-A (KR)
Inventor: JUN GYU DONG
IPC: D06F37/24
Filed: 2003-04-29
Abstract: PURPOSE: A suspension for a washing machine is provided to effectively reduce vibration and impact in washing and dehydrating processes by absorbing the vertical vibration and impact by the elasticity of a compressed coil spring and absorbing horizontal vibration and impact by the friction force of a suspension support part and a damper. CONSTITUTION: A suspension(60) for a washing machine comprises a housing(10) attached to the lower part of a connection member projected from a reservoir; a suspension support member(20) vertically attached from the upper edge part of the exterior; a support rod(30) one end of which is inserted through a trough hole of the housing and elastically supported by a compressed coil spring(1) and the other end is hingably connected to an upper side of the suspension support member; a damper(40); and a link(50). The compressed coil spring is built in the housing. A through hole(11) is formed to the inner upper part of the suspension support member. In the damper, rods(31A,31B) are each connected to the sides of a rotating shaft(31) rotatably combined through the through hole of the suspension support member. Friction members(33,44) coming contact with the sides of the suspension support member by the elasticity of a leaf spring(32) are attached to the one-ends of the rods. A side of the outer wall of the reservoir is hingably connected to a side of one end of the link. The rods of the damper are rotatably connected to the other end of the link.
Patent KR-20030047953-A (KR)
Inventor: CHO JUNG WAN
IPC: E02D17/20
Filed: 2003-05-28
Abstract: PURPOSE: A retaining wall block is provided to improve structural stability of a retaining wall by offering some area with trees planted and promoting unifying force between blocks, moreover to create environmentally friendly circumstances and improve the drain efficiency of a retaining wall. CONSTITUTION: The retaining wall is composed of: a front area(1) provided with a semicircular projection with numbers of protrusions reducing the velocity of water and having a front empty space(13), drain paths(4,4') and side projections(14,14'); a middle area(2) gradually narrowing, containing an upper projection(3), drain paths(4,4") and a couple of connecting holes(21,21') necessary to combine with an upper block; a back area(6,6') provide with a couple of connection holes(5,5').
Patent KR-20040104818-A (KR)
Inventor: KANG CHIL SEONG
IPC: H04L12/28
Filed: 2003-06-04
Abstract: PURPOSE: An arbitrating method of a bus requested from a dual Ethernet controller is provided to realize a dedicated arbiter for arbitrating a data bus in a dual Ethernet controller consisting of a master and a slave, thereby solving a problem of exclusively occupying the data bus. CONSTITUTION: A dual Ethernet arbiter(30) is used for bus arbitrating with regards to master and slave Ethernet controllers(10,20). When a bus request is transmitted from the master Ethernet controller(10) or the slave Ethernet controller(20), the dual Ethernet arbiter(30) transmits bus request signals of the master and slave Ethernet controllers(10,20) to a system arbiter(40). The system arbiter(40) transmits a grant signal for the inputted request signals to the dual Ethernet arbiter(30).
Patent KR-20030061734-A (KR)
Inventor: KIM SUN WHAN
IPC: A47C1/023
Filed: 2003-06-12
Abstract: PURPOSE: A width adjustable seat device is provided to eliminate pressure to be applied to the hips of the user, and to provide ventilation effect thereby creating more convenience seating posture. CONSTITUTION: The width adjustable seat device comprises a pair of seat sections(21) capable of moving away from each other, a pair of movable plates(24) mounted at the lower surface of the seat sections, respectively, a base for supporting the movable plates, a rotating shaft(26) mounted at the upper surface of the base, a width adjustment mechanism(27) mounted at the middle portion of the rotating shaft and having a pair of tapered leading grooves(27a), a driving device connected to the rotating shaft, a pair of connection portions(30) coupled to the leading grooves, respectively, and a guidance member for guiding the axial movements of the movable plates on the base.
Patent KR-20040107304-A (KR)
Inventor: KANG MUN SU
Filed: 2003-06-13
Abstract: PURPOSE: A charity type gift ticket selling system and method is provided to enable a user to buy a charity type gift ticket, and automatically donate and to automatically make donation when the gift ticket is used. CONSTITUTION: The system comprises a gift ticket sale server(130), a consumer client(110), affiliated stores(160, 162), and a donation management server(140). The gift ticket selling server(130) issues charity type gift tickets, sells the gift tickets to unspecified plural consumers, and settles the payment of the gift tickets. The consumer client(110) buys the gift ticket over the internet. The affiliated stores(160, 162) sell commodities to the consumer, receives the gift tickets, transmit the data on the gift tickets to the gift ticket sale server(130), and request the server to make payment. The donation management server(140) receives a part of a profit made by selling the gift tickets.
Patent KR-20050000478-A (KR)
Inventor: BANG KYU YONG
IPC: H05B33/04
Filed: 2003-06-27
Abstract: PURPOSE: A cap bonding device is provided to eliminate the necessity of using an ultraviolet mask and protect an electroluminescence display from heat and scattered light by irradiating ultraviolet light through the use of a light guide. CONSTITUTION: A cap bonding device comprises a cap support tray(2); an ultraviolet light generator; a light guide for guiding the ultraviolet light generated from the ultraviolet light generator to a predetermined position of a substrate(3) arranged over the tray; a light guide moving unit for varying the relative position between an irradiation port of the light guide and the substrate; and a controller for controlling operation of the light guide moving unit in accordance with paste pattern data.
Patent KR-20050005127-A (KR)
Inventor: KIM DONG RYUL
IPC: C08J3/18
Filed: 2003-07-03
Abstract: PURPOSE: Provided is a method for producing polymethyl methacrylate, which uses supercritical carbon dioxide as a plasticizer to decrease the melt viscosity of methacrylic resin during the extrusion process and to inhibit thermal decomposition of the resin, thereby reducing degradation in light transmission and discoloration. CONSTITUTION: The method for producing polymethyl methacrylate through an extrusion process comprises introducing 0.1-100 parts by weight of carbon dioxide into an extruder based on 100 parts by weight of a methacrylic resin. In the method, the temperature and pressure of carbon dioxide in the extruder are set to 31-300 deg.C and 1070-7000 psi, respectively. Additionally, one to three barriers formed by molten resin are present in each of the regions between a solid conveying zone and a melting zone of the extruder, and between a melt conveying zone and a vent zone. Further, the processing temperature between the barriers is set to 150-300 deg.C.
Patent KR-20050007817-A (KR)
Inventor: CHUNG CHIL HEE
IPC: G11C16/00
Filed: 2003-07-11
Abstract: PURPOSE: A memory device provided with programmed memory cells and memory cells capable of programming and erasing is provided to reduce the overall program storage time by storing the verified basic operation program on the first group memory and storing the amended or additional operational program on the second group, respectively. CONSTITUTION: A memory device(100) provided with programmed memory cells and memory cells capable of programming and erasing includes a first group of memory array block and a second group of memory array block. The plurality of programmed memory cells among the memory cells are arranged in the first group of memory array block. And, the programmable and erasable memory cells among the memory cells are arranged in the second group of memory array block.
Patent KR-20050009601-A (KR)
Inventor: SEO KWANG DEOK
IPC: H04N21/414
Filed: 2003-07-18
Abstract: PURPOSE: An apparatus and a method for processing digital video signals of a mobile communication system are provided to realize video signals with high quality and low delay by continuously processing video signals through an inverse variable length coding unit and a variable length coding unit. CONSTITUTION: A plurality of video conference terminals reduce resolution of video signals inputted through an image camera, and transmit the video signals. An MCU(Multipoint Control Unit) transmits a final image mixedly arranging the video signals received from the plurality of video conference terminals to the plurality of video conference terminals. Each video conference terminal includes a converter(110) converting the video signals into digital video signals, a down-scaling unit(120) reducing resolution of the digital video signals, an encoding unit(130) compressing output signals of the down scaling unit, and a transmitting unit(140) transmitting output signals of the encoding unit to the MCU.
Patent KR-20050011416-A (KR)
Inventor: HWANG HO IK
IPC: H01L21/336
Filed: 2003-07-23
Abstract: PURPOSE: A transistor with high junction voltage endurance and a manufacturing method thereof are provided to prevent breakdown due to convergence of electric field by obtaining a concave type profile against a well from a doped layer. CONSTITUTION: A gate electrode(500) is formed on a semiconductor substrate(100). A well(250) is formed under the gate electrode in the substrate. A doped layer(310) is formed at both sides of the well in the substrate. The doped layer is used as a source and drain region. The doped layer has a concave type profile against the well. A second well(200) is formed under the well and the doped layer.
Patent KR-20050012438-A (KR)
Inventor: CHOI JAE SHIK
IPC: D02G3/48
Filed: 2003-07-25
Abstract: PURPOSE: A high tenacity lyocell tire cord has low elongation, low shrinkage, improved strength and improved modulus. A tire manufactured out of the tire cord has increased uniformity, excellent handling stability, shape stability and increased fatigue efficiency. CONSTITUTION: A dip cord is obtained by the steps of: (i) dissolving cellulose and PVA mix powder in an N-methyl morpholine N-oxide/water solvent to manufacture a dope; (ii) extruding and spinning the dope through a spinning nozzle(2) containing orifices having 100-300μm of diameter, 200-2400μm of length, 2-8 of rate(L/D) of the length to the diameter and 2.0-5.0mm of interval between the orifices; passing the fiber type dope through an air layer(3), followed by making the dope arrived in an upper conical coagulating bath(4); coagulating the dope to get multi filament; (iii) putting the multi filament into a lower coagulating bath(8), followed by washing the multi filament into a washing bath; (iv) drying, oiling and winding the multi filament; (v) twisting the wound multi filament with a twister to manufacture a raw cord; weaving fabric out of the raw cord; and then dipping the fabric into a dipping solution. The dip cord for a tire cord has 14.0-35.0kg of breaking load, 3000-6000denier of fineness, at least 80% of fatigue resistance, 8.0-15.0kg of adhesion to rubber, 0.30-0.95 of a twist constant and 1.0-4.0 being the sum(E-S) of elongation at specific load and shrinkage at 4.5kg of tensile load. A tire contains the dip cord.
Patent KR-20050016802-A (KR)
Inventor: KANG KYUNG TAE
IPC: C10G35/12
Filed: 2003-08-04
Abstract: PURPOSE: A thermal decomposition gas apparatus for reforming hydrogen is provided to improve producing efficiency of useful gas(H2,CO). CONSTITUTION: The thermal decomposition gas apparatus for reforming hydrogen reforms hydrogen by the gasification reaction of a fluidization bed furnace in which a fluidization bed(10) and a free board are formed. The thermal decomposition gas apparatus for reforming hydrogen includes an air providing portion(2), a biomass injecting portion(3) for reforming the gas of thermally decomposed biomass(30) to become a hydrogen, and an oxidant providing portion(4).
Patent KR-20050017231-A (KR)
Inventor: PARK YOUNG HUN
IPC: H04B3/58
Filed: 2003-08-11
Abstract: PURPOSE: A repeater unit for PLC(Power Line Communication) while having a disturbance cut-off function is provided to basically prevent disturbance existing in one-sided power line from being propagated to other-sided power line through the repeater unit, thereby lowering a data communication error rate while performing more stable data communication. CONSTITUTION: The first signal transmitter(41) consists of a coupling circuit(41a) for coupling/extracting signals, a modulator/demodulator(41b) for modulating/demodulating input signals, and a micro controller(41c) for decoding the input signals to generate data which is the same as transmission data included in the decoded signals, and supplying the signals to the modulator/demodulator(41b) by repeating the signals. The second signal transmitter(42) is composed of a coupling circuit(47) for coupling/extracting signals, a modulator/demodulator(42b) for modulating/demodulating input signals, and a micro controller(42c) for decoding the input signals to generate data which is the same as transmission data included in the decoded signals, and supplying the signals to the modulator/demodulator(42b) by repeating the signals. A photo coupler(43) couples plural signal lines for connecting the micro controller(41c) with the micro controller(42c).
Patent KR-20050018295-A (KR)
Inventor: CHANG YONG
IPC: H04W88/18
Filed: 2003-08-16
Abstract: PURPOSE: A method for selecting a vocoder in a mobile communication system is provided to select only one of vocoders simultaneously located in a media gateway regardless of a transmission path type of the media gateway and a BSC, thereby reducing waste of vocoder resources while effectively transmitting/receiving a voice signal. CONSTITUTION: An MS(110) transmits an origination message to a BSC(121)(401). The BSC(121) sends a base station reply command message(402), and transmits a CM(Connection Management) service request message to an MSCe(132)(403). The MSCe(132) decides whether vocoder resources are available, and determines which vocoder resource is to be used(404). An MGW(Media Gateway)(131) sends an MEGACO reply message(405). The MSCe(132) determines to assign the second vocoder resource(406). The BSC(121) sets a TCH(Traffic Channel) with the MS(110)(407), and sends an assignment complete message to the MSCe(132)(408). When the TCH setup is terminated, the MGW(131) sends a ring back tone to the MS(110)(409).
Patent KR-20030071722-A (KR)
Title: Checking system using mobile communication terminal and method therefor
Inventor: SONG JOUNG JOON
IPC: H04Q9/00
Filed: 2003-08-18
Abstract: PURPOSE: A checking method using a mobile communication terminal and a method therefor are provided to directly obtain images of various added meters by using a scanner or a camera installed in the mobile communication terminal, and to transmit the images to a checking sensor, thereby reducing cost and increasing user convenience. CONSTITUTION: A checking center terminal receives images from a mobile communication terminal through a communication network(S11), and analyzes the images through stored algorithm according to an operation of a recognition module, then separates characters/numbers from the images(S12). The checking center terminal recognizes used amounts and inherent numbers of added meters(S13), and registers recognized results in a database(S14). An internal microprocessor confirms the used amounts by period, and writes a bill(S15).
Patent KR-20050006014-A (KR)
Inventor: CHOI CHANG HWAN
IPC: A47C21/04
Filed: 2003-08-28
Abstract: PURPOSE: A sofa with the Korean under-floor heating system for fomentation and massage is provided to allow a user to take more comfortable posture upon seating on the sofa, and to give massage function by a negative ion and far-infrared radiation emitted from a gem stone. CONSTITUTION: The sofa with the Korean floor heater(10) for fomentation and massage includes a seat portion(2), a seat back(4), a side plate(6) and a frame(8). A portion of the seat portion is shaped into a flat plate having large area. A bed portion(20) comprises the Korean under-floor heating system made of a gold coated plate, a building stone, a yellow soil, a hardwood charcoal, a ceramic material and a gem stone, which emit negative ion and far-infrared radiation. The bed portion is constituted so that a heating device(14) is embedded into the Korean under-floor heating system.
Patent KR-20040022409-A (KR)
Inventor: TANAKA HIDEHIKO
IPC: G11C16/02
Filed: 2003-09-06
Abstract: PURPOSE: To enhance a data holding property by performing a process to take a large margin between distributions of contiguous threshold level voltages in short time. CONSTITUTION: In a memory array 1 in which a plurality of memory cell transistors having respective charge storage layers are arranged, and a value out of data which takes two, three or more values is written in the memory cell transistor by adjusting the threshold voltage of the memory cell transistor by varying a charge storage amount to a charge storage layer, the threshold voltage of each memory cell transistor and a mean value in threshold level voltage distribution corresponding to the data value written in the memory cell transistors are compared by a determination means 2. When the threshold voltage is lower than the mean value, re-injection of a charge to the charge storage layer is carried out by the rewriting means 3 in order to raise the threshold voltage of the memory cell transistor by the difference of a maximum value and a mean value of the threshold voltage distribution.
Patent KR-20050032365-A (KR)
Title: Flash memory card
Inventor: KIKUCHI TAKASHI
IPC: G11C7/00
Filed: 2003-10-01
Abstract: A flash memory card is provided to detect a clock frequency of a host and change an internal clock according to the clock frequency of the host. A flash memory(110) stores data. A controller(120) stores the data in the flash memory(110) or prints out the stored data. A clock frequency controlling unit(130) detects the change of external clocks inputted from a host(200). When the external frequency is changed, the clock frequency controlling unit(130) detects and outputs the changed external frequency to a clock generator(140). The clock generator(140) generates an internal clock corresponding to the changed external frequency.
Patent KR-20050035326-A (KR)
Inventor: NA JONG CHUL
Filed: 2003-10-10
Abstract: 본 발명은 지문을 이용한 카드 승인방법에 관한 것으로, 개인정보와 함께 사용자의 지문을 입력부(120)에 입력하여 슈퍼컴(100)에 인가하는 사용자 정보 입력단계와, 상기 입력된 정보를 데이터화하여 이를 통장 또는 카드에 입력하여 사용자에게 발급하는 카드 및 통장 발급단계와, 상기 입력된 정보를 데이터를 정보저장부(110)저장하는 정보저장단계와, 상기 슈퍼컴(100)에 접속된 단말기(130)에 지문인식센서(131)를 설치하는 지문인식센서 설치단계와, 상기 단말기(130)로부터 인가되는 개인정보 및 지문을 비교 분석하여 승인여부를 결정하는 승인단계와, 상기 승인단계에서 승인된 내역을 정보저장부(110)저장하는 내역저장단계, 및 이을 통보하여 사용자의 결제를 유도하는 완료단계로 구성하므로, 지문을 통하여 본인 여부를 정확하게 확인하므로 보안성이 크게 향상될 뿐만 아니라 이로 인하여 카드의 도용, 도난 및 분실에 따른 금융사고를 억제할 수 있고 비밀번호의 수시 변경 등으로 인한 번거로움을 해소하여 건전한 금융문화를 얻을 수 있다.
Patent KR-20050038073-A (KR)
Inventor: PARK KYUNG WOOK
IPC: H03K3/03
Filed: 2003-10-21
Abstract: 본 발명은 오실레이터 및 오실레이터의 출력 신호 조절 방법에 관한 것으로, 외부 제어 신호에 따라 동작하는 스위칭 수단을 반전 지연부의 출력 단자와 커패시터 사이에 퓨즈 수단과 병렬로 설치하고, 외부 제어 신호로 스위칭 수단의 온/오프시켜 반전 지연부의 출력 단자에 연결된 커패시터의 정전 용량을 조절하면서 목표 주기의 신호가 발생되는 최적의 연결 상태를 확인한 후, 퓨즈 수단을 이용하여 최적의 연결 상태를 고정시킴으로써, FIB(Focused Ion Beam) 장비에서 단 한번의 연결 또는 커팅 공정만으로도 목표 주기의 신호를 정확하게 발생시킬 수 있다.
Patent KR-20030091864-A (KR)
Inventor: BAE CHANG HA
IPC: B41M5/00
Filed: 2003-10-23
Abstract: PURPOSE: An ink-jet sublimation transfer printing method for natural fiber is provided to maintain the original texture of natural fiber(cotton, hemp, rayon, silk) and to show no cracking in laundering. CONSTITUTION: The ink-jet sublimation transfer printing method for natural fiber comprises the steps of: printing the desired image on the ink-jet sublimation transfer paper made of the first silicone coating treated release layer(1), the second adhesive layer(2) with a heat dissipating dye colored on and the third ink absorbing layer(3) to absorb a soluble sublimation ink, putting the printed plane on the natural fiber, and pressing with a heat press.
Patent KR-20050041124-A (KR)
Inventor: JUNG SU YOUNG
IPC: E06B5/11
Filed: 2003-10-30
Abstract: 본 발명은 강, 절도 등 불법 침입자로부터 내부의 침입을 저지하거나 또는 실내의 어린이가 외부로 추락되는 것을 방지하기 위하여 창문 등에 설치하는 방범창에 관한 것으로서, 임의의 형태로 구성되는 방범창의 내부에 다양한 공간 형태의 장식창을 두고 그 중 선택된 공간에 다양한 색상의 장식부를 일체로 성형되도록 하여 종래 방범창의 획일적이고 경직된 이미지와 형태에서 벗어나 제품의 미관향상을 도모하고, 경쟁력을 향상시켜 구매욕을 상승시킬 수 있도록 하는 장식부를 갖는 방범창의 제조방법 및 그 방범창에 관한 것이다.
Patent KR-20050041145-A (KR)
Inventor: SONG YOO JIN
IPC: G09G3/296
Filed: 2003-10-30
Abstract: 본 발명은 어드레스 전극의 구동에 의한 소비전력을 감소시키고 발열을 저감시킬 수 있는 플라즈마 디스플레이 패널의 어드레스 전압 제어방법에 관한 것이다. 본 발명에 의한 플라즈마 디스플레이 패널의 어드레스 전압 제어방법은, X 전극 라인들과 Y 전극 라인들이 교대로 나란히 배열되는 유지전극 라인 쌍들에 대하여 어드레스 전극 라인들이 교차되는 영역에 방전셀들이 형성되고, 디스플레이 주기로서의 프레임마다 시분할 계조 디스플레이를 위한 복수의 서브-필드들이 존재하는 것으로, 각각의 서브-필드마다 리셋 주기, 어드레스 주기, 및 유지방전 주기들이 존재하고, 어드레스 주기에 어드레스 전극 라인들에 어드레스 전압을 인가하여 표시하고자 하는 방전셀을 선택하는 플라즈마 디스플레이 패널에 대하여, 어드레스 전압을 제어하는 플라즈마 디스플레이 패널의 어드레스 전압 제어방법에 있어서, (a) 어드레스 전압의 패턴을 감지하는 단계와; (b) 어드레스 전압의 패턴에 따라, 어드레스 전압의 레벨을 결정하는 단계; 및 (c) 상기 (b) 단계에서 결정된 어드레스 전압의 레벨에 따라, 어드레스 전극 라인들에 인가되는 어드레스 전압을 공급하는 단계를 구비한다.
Patent KR-20030091897-A (KR)
Inventor: KOO JA CHEON
IPC: B23P19/06
Filed: 2003-11-13
Abstract: PURPOSE: A device for automatically rotating bolts is provided to easily couple bolts and to reduce work hours by automatically rotating and coupling the bolts. CONSTITUTION: A device(100) for automatically rotating bolts is composed of an upper housing(10) moving downward, a lower housing(20) moving downward, a connection unit(30) connecting the upper housing to the lower housing, a first spring(40) wound on the outer circumference of the connection unit, a bolt coupling unit(50) communicated with the lower housing and containing the bolts, a bolt supply hose(60) communicated with the bolt coupling unit and supplying the bolts to the bolt coupling unit, a head contact unit coupled with the head of the bolt and rotated by a motor, and a second spring contacted with both sides of the bolt coupling unit. The first spring absorbs the shock on the lower housing when the upper housing moves downward.
Patent KR-20050047256-A (KR)
Inventor: YOO HAN JOO
IPC: G09G3/14
Filed: 2003-11-17
Abstract: 본 발명은, 다수개의 세그먼트로 구성된 복수개의 그리드를 가지는 그리드 표시장치에 관한 것이다. 본 발명의 그리드 표시장치는, 상기 각 그리드에 대응하여, 상호 순차적으로 소정의 시간차를 가지고 각각 주기가 연속적으로 변동하는 복수개의 그리드 구동신호를 출력하고, 상기 각 그리드의 점등 대상 세그먼트들을 위한 세그먼트 구동신호들을 상기 그리드 구동신호에 동기화시켜 출력하는 구동신호 발생부와; 상기 구동신호 발생부로부터의 그리드 구동신호에 따른 각 그리드 구동전압을 상기 복수개의 각 그리드로 출력하는 그리드 구동부와; 상기 구동신호 발생부로부터의 세그먼트 구동신호에 따른 각 그리드의 각 세그먼트로 세그먼트 구동전압을 출력하는 버퍼 구동부를 포함하는 것을 특징으로 한다. 이에 의하여, 고조파의 발생량을 줄이고 전자파장애를 방지할 수 있는 그리드 표시장치를 제공할 수 있다.
Patent KR-20050047408-A (KR)
Inventor: JANG MIN SU
IPC: B60C9/02
Filed: 2003-11-17
Abstract: 본 발명은 비드코어에 턴업 설치되는 카카스의 설치구조를 개선하여 타이어의 내구성을 향상시키는 동시에 타이어를 경량화시켜 회전저항을 줄임으로써 연비성능 또한 향상시킬 수 있게 하는 내구성을 향상시킨 공기입 타이어에 관한 것이다. 
     종래에 비드코아에 턴업 설치되는 카카스의 끝단을 비드코아의 상단까지만 설치시키는 방법이 시도되고 있으나 이는 카카스의 단부가 주행시 움직임이 심한 림플랜지부위에 위치되어 카카스 단부에서 세파레이션이 발생되는 문제점이 있었던 바, 본 발명은 트래드(1)와 사이드월부(2) 및 비드부(3)로 구성되고, 카카스(4)가 비드부(3)의 비트코아(30)에 턴업설치되는 것에 있어서, 상기 비드코아(30)에 턴업설치되는 카카스(4)의 끝단부(41)를 적어도 하나 이상의 겹으로 접어서 구성됨에 따라 타이어의 내구성을 향상시키는 동시에 타이어를 경량화시켜 회전저항을 줄임으로써 연비성능 또한 향상시킬 수 있는 효과가 있는 것임.
Patent KR-20050049066-A (KR)
Inventor: CHOO SUNG HO
IPC: H01L33/22
Filed: 2003-11-21
Abstract: 본 발명은 발광 다이오드의 구조를 P형 질화갈륨층, 활성층, N형 질화갈륨층 영역까지 요철형상으로 제조함으로써, 광효율을 향상시키면서 다이오드 내부에서 발생하는 열을 용이하게 방열할 수 있는 발광 다이오드 및 그 제조방법을 개시한다. 개시된 본 발명은 화합물 반도체를 이용하여 발광하는 발광 다이오드에 있어서, 상기 발광다이오드의 발광 효율을 향상시키고, 발생되는 열을 용이하게 방출시키기 위하여, P형 질화갈륨층, 활성층 및 N형 질화갈륨층 영역까지 관통된 요철홈들을 갖는 것을 특징으로 한다. 
     본 발명에 따른 발광 다이오드 제조방법은. 사파이어 기판 상에 N형 질화갈륨층을 형성하는 단계; 상기 N형 질화갈륨층 상에 활성층과 P형 질화갈륨층을 순차적으로 형성하는 단계; 상기 P형 질화갈륨층 상에 TM층을 형성한 다음, 식각 공정을 진행하여 상기 TM층, P형 질화갈륨층, 활성층, N형 질화갈륨층 일정 영역까지 식각 하여 요철 구조를 형성하는 단계; 및 상기 식각된 TM층 상에 P전극을 형성하고, 상기 N형 질화갈륨층 상에 N전극을 형성하는 단계;를 포함하는 것을 특징으로 한다.