baber/WOPTO huggingface dataset:
Patent KR-20090011068-A (KR)
Title: Monitoring system for forest with zigbee using gps
Inventor: JU HUI DONG
IPC: G08B25/00
Filed: 2007-07-25
Abstract: A Zigbee forest fire monitoring system using a GSP(Global Positioning System) is provided to reduce a maintenance cost and a repair cost for expensive equipment such as an infrared camera and to remove an isolated state in a dangerous region by offering information through a mobile terminal. A cluster(52) includes one or more sensors in order to measure information related to a forest fire and to transfer coordinates to a server. A server(10) receives the collected information from the cluster, controls a monitoring camera, and offers the collected information to a monitoring unit and a mobile terminal. A SMS(34) transmits a text message from a disaster monitoring center to a mobile terminal in a real-time period. A lightning rod is used for preventing troubles of the monitoring camera and the server.
Patent KR-20090012738-A (KR)
Title: 경품 추첨이 가능한 단말기 및 이를 이용한 경품추첨방법
Inventor: YUK SANG JO
IPC: G06Q30/00
Filed: 2007-07-31
Abstract: 본 발명은 신용카드 결제를 통해 경품 이벤트 진행이 가능한 단말기에 관한 것으로써, 좀더 자세히 설명하면 바코드 시스템에 의해 결제가능한 금액이 신용카드 단말기를 통해 카드회사에 출력되어 질 때, 구입하려는 모든 제품의 무선태그 정보를 리드할 수 있는 RFID시스템을 상기 신용카드 단말기와 연계하여 설치함으로써 구입하려는 조건이 경품조건에 부합되면 실시간으로 경품 추첨이 가능한 단말기에 관한 것이다. 
     일반적으로 바코드 시스템은 어떠한 물품에 대한 데이터나 정보를 자동인식 기술을 통하여 정확하고 신속하게 수집 및 처리하기 위하여, 문자, 숫자, 기호 등을 폭이 다른 검은 막대(bar)와 흰색 스페이스(space)로 표현하여 코드화한 바코드 심벌(symbol)을 광학식 마크판독장치를 통하여 상품의 종류 및 가격정보 등을 판독하여 이용하는 시스템을 말한다. 
     그리고 이러한 바코드 시스템과 연동하여 작동하는 결제 시스템은, 각 개인이 소지한 신용카드와 상기 신용카드의 정보를 판독하여 결제가 이루어지도록 하는 단말기를 포함하여 이루어진 카드 결제시스템이 있고, 이러한 카드 결제 시스템은 신용카드 정보를 바탕으로 결제시 영수증을 통해 어떠한 카드가 어느 가맹점에서 얼마만큼 사용했는지 기록되어져 사용자에게 통지되어 진다.  
     그리고 이러한 결제시스템을 통해 경품이벤트를 실시하고자 할 경우, 통상 제품을 판매하는 백화점이나 마트에서는, 현장에 설치되어져 있는 이벤트 응모함에  발급받은 영수증을 넣어 응모함으로써, 예시기간이 지난후 경품추첨을 통하여 당첨된 경품을 지급하도록 되어져 있다. 
     그러나 이러한 경품 이벤트는 일정 예시기간이 경과한 후에 이루어지도록 되어 있어, 투명성 및 신뢰성에 문제가 있고, 동시에 자신이 경품에 당첨되었는지 아닌지 그 사실을 즉석에서 알 수 없어 항상 경품진행상황을 살펴보아야만 하는 문제점이 있었다. 
     또한, 이러한 경품 이벤트는 백화점이나 판매처에 보다 많은 사람들이 들어와 물건을 구입하도록 하기 위한 판촉행사로서, 보다 놓은 판촉효과를 이루기 위해서 즉석에서 당첨사실을 구매자에게 알리도록 하여 더욱 많은 상품구매를 유도하여야 할 필요성이 있다. 
     따라서 본 발명은 상기와 같은 문제점을 해결하기 위한 안출된 것으로서, 그 목적은 투명한 이벤트 진행을 위하여 매장 내에서 실시간으로 이벤트 진행상황을 구매자들에게 알림으로써, 신뢰성 및 더욱 많은 사람의 이벤트 참여를 유도케하여 높은 판촉효과를 이루고자 하는 것이다. 
       
     경품, 단말기. 링크모듈, 경품추첨확인모듈, 인식모듈, 무선태그 리더기.
Patent KR-20090012876-A (KR)
Title: A broadcasting receiver
Inventor: JUNG TAE KWON
IPC: H04N5/44
Filed: 2007-07-31
Abstract: A broadcasting receiver is provided to improve sensitivity of a wireless signal and increase a receiving rate by applying an angle, a path and space diversity. A signal selecting receiver(101) receives a broadcast signal from a plurality of antenna elements through a plurality of paths. According to the intensity of a broadcasting signal received from the signal selecting receiver, a controller(110) controls to receive a signal selectively. A display unit(112) outputs the received signal.
Patent KR-20090014757-A (KR)
Title: Method and apparatus of collecting carbon nano tube
Inventor: JANG SUK WON
IPC: B82B3/00
Filed: 2007-08-07
Abstract: An apparatus of synthesizing carbon nanotube is provided to improve reaction rate with a reaction gas by flowing catalyst of a powder form supplied to inside of a reaction chamber up and down to fixed height through a rotor installed at base part. An apparatus(100) of synthesizing carbon nanotube comprises a reaction chamber(110) serving a space for synthesizing the carbon nanotube, a catalyst supply part(120) supplying catalyst of a powder form inside a reaction chamber, a reacting gas providing unit(130) supplying a reaction gas reacting to the catalyst and forming the carbon nanotube inside the reaction chamber and a rotor(140) forming ascending current for flowing catalyst supplied from the catalyst supply part in an upper direction. The rotor comprises one or more rotating vanes.
Patent KR-20090015575-A (KR)
Title: Spam interception service system and its method using by a mobile communication terminal
Inventor: KIM JIN TAE
IPC: H04M3/54
Filed: 2007-08-09
Abstract: A spam blocking service system and a method thereof using a mobile communications terminal for improving the convenience of a user by selectively blocking an incoming switched spam call are provided to request incoming switched information about a call in an absence through communication network and selectively perform a spam registration about the call in an absence when the spam registration is requested according to provided incoming switched information. A first terminal(102) requests information of a second terminal(112) to a switch(106) according to absence information through a first communication network(104). A terminal request incoming switched information of the second terminal to HLR(108) according to information request of the second terminal(206). After the HLR confirms whether to subscribe a spam blocking service of the first terminal according to the request of the incoming switched information, the HLR checks the incoming switched information stored corresponding to the second terminal(208). The HLR extracts and provides the incoming switched information of the second terminal to the switch(210). The switch requests the transmission of the incoming switched information to an ARS service center through an ARS service(212). After the ARS service center generates an ARS message including the incoming switched information according to the transmission request of the incoming switched information from the switch, the ARS service center transmits the ARS message to the first terminal through the switch and the first communication network(214).
Patent KR-20090019356-A (KR)
Title: Refresh characteristic test circuit and refresh characteristic test method using the same
Inventor: HONG DUCK HWA
IPC: G11C29/00
Filed: 2007-08-20
Abstract: A refresh characteristic test circuit and a refresh characteristic test method using the same are provided to test a refresh fail by using reading data stored in a sub word line and leakage current due to an adjacent/passing gate effect. A selection signal generating unit(1) receives a first address and a test mode signal(TM) and generates a selection signal(MAT-MAT) for selecting a cell block. A main word line signal generating unit(2) receives a second address and the test mode signal and generates a main word line signal for selecting a main word line of the selected cell block. A sub word line signal generating unit(3) receives a third address and the test mode signal and generates a sub word line signal(SWL-SWL) for enabling a sub word line of the selected main word line.
Patent KR-20090020187-A (KR)
Title: Method for powder cosmetic plate and manufacturing method thereof
Inventor: HWANG SUN CHEOL
IPC: A45D33/00
Filed: 2007-08-23
Abstract: A method for manufacturing cosmetic powder plate is provided to mass produce the cosmetic powder plate through the single production line, and improve the fanciness and beauty of product by shaping various decorative patterns on the powder surface. The method for manufacturing cosmetic powder plate comprises the steps of: successively arraying the first conveyor belt(10) in one side direction, the second conveyer belt(90) in another side direction, and the turn-table(20) positioned between them, wherein the first press means(30) is set up on the first conveyor belt; the surface-cutting means(40), the surface-cleaning means(50) and the second press means(60) are installed in the turn-table; the pick-up means(70) and tray(91) are formed in the end part of the second conveyer belt; the powder dish(100) supplied from one end of the first conveyor belt is pressure-molded by the first press means; cutting the surface of the powder dish with powder and is secondly pressure-molded together with the dish exterior material; and the secondly pressurized powder dish is taken away from the tray inner side by the pick-up means of the second conveyor belt end.
Patent KR-20080043693-A (KR)
Title: Wide-angle lens and optical system having the same
Inventor: JO YONG JOO
IPC: G02B9/02
Filed: 2007-09-11
Abstract: A wide-angle lens and an optical system having the same are provided to detect a motion of an object around a sensor accurately by increasing light intensity around the sensor. An optical system includes a wide-angle lens(L). An object-side surface(2) of the wide-angle lens is convex toward an object. An image-side surface(3) of the wide-angle lens is convex toward an image on an optical axis. A refractive surface of at least one of the object-side and image-side surfaces is formed in an aspherical shape. The object-side surface of the wide-angle lens is arranged behind an aperture shutter(AS). The image-side surface of the wide-angle lens is arranged in front of an image forming surface(IP). A relation, 1.0 < TL/f < 3.5, is satisfied, where the TL is a distance from the aperture shutter to the image forming surface and the f is a focal distance of the optical system.
Patent KR-20090027892-A (KR)
Title: Kick board
Inventor: OH SUNG SIG
IPC: B62K15/00
Filed: 2007-09-13
Abstract: A kickboard is provided to make the big driving force with a rotation power generator rotating a ratchet gear with the chain. A kickboard comprises: a supporting pipe(2) fixed to the front surface of the stage; a support stand(5) including a handle(3) mounted on the upper part and a nose wheel(4) mounted on the lower part; a pair of brackets(6,6') formed on the stage; an elevation operation part mounted on a machine room(7) in order to ascend a push plate to top and bottom; and a power transmission unit operating the back wheel.
Patent KR-20090028026-A (KR)
Title: Image sensor and method of fabricating the same
Inventor: LEE YUN KI
IPC: H01L27/146
Filed: 2007-09-13
Abstract: An image sensor and a method of manufacture thereof are provided to form differently the traverse direction area of the impurity regions in the semiconductor substrate and to suppress the blooming phenomenon due to the diffusion of the impurity regions. The image sensor comprises the semiconductor substrate(101), and the first and second impurity regions (116,118). The first and the second impurity region are separated from in the semiconductor substrate. The first and the second impurity region are formed with the same depth. The traverse direction area of the lower region of the first impurity region is greater than the traverse direction area of the second impurity region. The traverse direction area of the upper region of the first impurity region is the same as that of the second impurity region. In the first impurity region, the impurity concentration of the upper region is greater than the impurity concentration of the lower region.
Patent KR-20080070496-A (KR)
Title: Electric washer
Inventor: TANAKA HIROYUKI
IPC: D06F35/00
Filed: 2007-09-17
Abstract: An electric washing machine is provided to prevent laundry from being stuck between the edge of an opening and a door by sealing a gap between them with a packing. An electric washing machine(10) comprises a housing(11), a cover member(142), a washing tub(20), a door(12), and a packing(120). The cover member forms the front wall of the housing and has an inlet to put in and take out laundry. The washing tub, installed in the housing, has an opening(118) mated to the inlet of the cover member to contain laundry. The door opens and closes the inlet and the opening. The packing covers the edge of the opening and is attached to the door when the door is closed so as to seal a gap between the edge and the door.
Patent KR-20090030393-A (KR)
Title: System setting up configurations of home network automatically and the method thereof
Inventor: SON YOUNG SUNG
IPC: H04L12/12
Filed: 2007-09-20
Abstract: A system capable of automatically setting up configuration of a home network and a method thereof are provided to set environment setting of a home network by using shared setting information without help of a manager. A home network comprises a device(140), a network(130), an application service(120), a management system(110), a setting information manager(100) and an error manager(160). The setting information manager collects and manages home network environment setting information for automatic home network environment setting. And the setting information manager shares the setting information between a setting information management server(300) and the setting information manager. The error manager recognizes home network error. And the error manager notifies a user of the error.
Patent KR-20080027745-A (KR)
Title: Abutment module
Inventor: UNTERHUBER SEBASTIAN
IPC: B23Q7/00
Filed: 2007-09-21
Abstract: An abutment module is provided to allow an abutment member to be displaced between an abutment position and a non-abutment position by a setting member. An abutment module comprises an abutment member(16) disposed on a main unit for an object(14) that moves on a plane(18) in the working direction. The abutment member is displaced between an abutment position on the plane and a non-abutment position below the movable plane by a setting member. The setting member includes a driving element(24) generates linear movement in the direction in parallel with the plane. The linear movement is switched into longitudinal movement generated between the abutment position and the non-abutment position of the abutment member by a switching member.
Patent KR-20090036729-A (KR)
Title: Organic light emitting display
Inventor: YU SANG HO
IPC: G09G3/30
Filed: 2007-10-10
Abstract: An organic light emitting display is provided to solve uneven brightness due to deterioration of transistor by outputting data signal and pulse signal to a sub-pixel selectively. A display unit comprises a plurality of sub pixels arranged in mattress type, and a display supplies a drive power and signal to a driving part. One sub pixel comprises a first transistor, an organic light-emitting diode, a second transistor, a capacitor, and a third transistor. An anode of the organic light-emitting diode(OLED) is connected to a second wiring(VDD), and the cathode of the organic light-emitting diode is connected to one end of a first transistor. A gate of a second transistor(SW2) is connected to the other end of the first transistor, and one end of the second transistor is connected to the cathode of the organic light-emitting diode, and the other end of the second transistor is connected to the third wiring(VDATA). One end of the capacitor(Cst1) is connected to the other end of the first transistor, and the gate of the third transistor(SW3) is connected to the fourth wiring(SCAN), and one end of the third transistor is connected to the capacitor. The other end of the third transistor is connected to the third wiring.
Patent KR-20090038055-A (KR)
Title: Conductive lamp holder for inserting a lamp and socket for a conductive lamp holder
Inventor: PARK JEONG HO
IPC: H01R33/08
Filed: 2007-10-15
Abstract: A conductive lamp holder and a lamp holder socket are provided to have no need of a power sub connector attached to a circuit board with a wire and a connector, thereby lowering process costs. A protrusion(11) is inserted into a lamp holder socket inserting hole attached to a cover bottom of a backlight. The protrusion is molded in a lower part(13) of a socket main body(10) so that the protrusion is detachable from the circuit board. A socket cover(30) is fixed in the front and rear parts of external both surfaces of the socket body. A groove connected to a protrusion of the socket cover is in the socket body. A lead line connection groove(26) of a screw thread shape adhered closely with a lead line of a lamp is formed. A contact part of a screw thread shape is fixed in a receiving groove of the socket body.
Patent KR-20090041143-A (KR)
Title: Blood sugar metering system
Inventor: YI KYOUNG SOO
IPC: A61B5/145
Filed: 2007-10-23
Abstract: A blood sugar measuring system is provided to reduce a pain due to a blood extraction through a divergence of an aroma by destroying capsules coated on a blood sugar measuring sensor in measuring a blood sugar. A blood sugar measuring system includes a blood sugar measuring sensor(S) and a blood sugar measuring device. The blood sugar measuring sensor includes at least one electrode(21,22,23) and an electric insulation substrate(28). Capsules(26) are coated on the electric insulation substrate, and include polymer. The polymer emits a predetermined aroma. The capsules are destroyed by an external stimulus. The external stimulus is one among physical contact, vibration, and ultrasonic wave. The blood sugar measuring device includes a destruction unit. The destruction unit has a groove. The blood sugar measuring sensor is inserted in the groove. The destruction unit destroys the capsules coated on the blood sugar measuring sensor.
Patent KR-20090010856-A (KR)
Title: Combination anchor sharing load and pressure grouting anchoring method using the same
Inventor: KIM YONG KI
IPC: E02D3/12
Filed: 2007-10-30
Abstract: An integral dispersive compression type anchor, and a pressure grouting anchoring method using the same are provided to heighten the effect of ground reinforcement by bearing the load acting on the ground evenly with a plurality of fixing agents, and extending a bulb to be larger than a diameter of a perforated hole while grouting in a perforated hole. An integral dispersive compression type anchor, for dispersing the load acting on the ground effectively by connecting a plurality of fixing agents mutually, includes a plurality of fixing agents arranged in a row at regular intervals, a strand(20) connected to the rear side while the front end is coupled with each fixing agent and installed to penetrate fixing agents arranged on the rear side if a fixing agent is arranged on the rear side, a coating hose(21) covering the strand, and a coating pipe(30a) covering the coating hose and coupled to each fixing agent of the front and rear sides.
Patent KR-20090043839-A (KR)
Inventor: LEE JUN WOO
IPC: G06Q30/06
Filed: 2007-10-30
Abstract: 본 발명은 선물추천 서비스 제공 방법, 그를 위한 선물구매 관리 서버 및 선물구매 관리 시스템에 관한 것이다.  
     본 발명은 구매자 단말기로 선물구매 관리 서비스를 제공하는 선물구매 관리 시스템에 있어서, 구매자 단말기로부터 입력되어 제공된 선물대상자에 대한 등록정보를 저장하고, 저장된 등록정보를 갱신하며, 등록정보를 토대로 상기 구매자 단말기로 선물일정 정보를 사전에 제공하고, 등록정보를 토대로 선물대상자에 대한 추천선물 정보를 생성하여 제공하는 선물구매 관리 서버; 및 구매자 단말기 및 선물구매 관리 서버 간의 통신을 위한 유무선 통신망을 포함하는 것을 특징으로 하는 선물추천 서비스를 제공하는 선물구매 관리 시스템을 제공한다.   
     본 발명에 의하면, 선물구매 관리 시스템은 구매자에 의해 입력된 선물대상자에 대한 각종 등록정보를 갱신 및 저장 관리함으로써, 사용자에게 기저장된 등록정보를 토대로 선물일정 알림 기능 및 선물 추천 기능을 제공하고, 배송 관련 정보 확인 기능을 수행함으로써, 사용자에게 배송 확인의 편리함과 선물 구매 만족도를 향상시켜주는 효과가 있다. 
       
     선물추천, 배송관리, 선물대상자, 등록정보
Patent KR-20090044429-A (KR)
Inventor: PARK SEUNG MIN
IPC: G08G1/0962
Filed: 2007-10-31
Abstract: 본 발명은 무선 주파수 인식 기술에 관한 것으로, 더욱 상세하게는 상품에 부착된 태그로부터 태그 인식 정보를 추출하고, 추출된 인식 정보를 통해 해당 상품의 간략 또는 상세 정보는 물론 해당 상품 판매점 또는 A/S 센터 위치, 해당 판매점 또는 A/S 센터로의 이동시 경로 정보를 네비게이션 또는 네비게이션 기능을 가진 상품 정보 제공 장치를 통해 제공할 수 있는 상품 정보를 제공하는 네비게이션 장치, 상품 정보 제공 장치 및 그를 이용한 상품 통합 정보 검색 시스템에 관한 것이다.   
     본 발명에 따른 상품 통합 검색 시스템은 상품에 부착된 태그로부터 태그 인식 정보를 리딩하여 출력하는 리더기와, 상기 리더기로부터 전송되는 태그 인식 정보를 수신하여 해당 상품의 간략 또는 상세 정보, 판매점 또는 A/S 센터의 위치 정보를 포함하는 상품 정보를 요청하고, 상품 정보를 수신하여 사용자에게 제공하는 상품 정보 제공 장치와, 상기 정보  단말기로부터 태그 인식 정보를 포함하는 상품 정보 요청에 따라 해당 상품의 상품 정보를 액세스하여 제공하는 상품 정보 관리 서버를 포함한다.   
       
     네비게이션, 수치지도, RFID, RFID 태그, 상품 검색
Patent KR-20090049940-A (KR)
Inventor: LEE SANG IN
IPC: A47L9/00
Filed: 2007-11-14
Abstract: 본 실시예는 진공 청소기에 관한 것이다.  
     본 실시예의 진공 청소기는, 청소기 본체; 상기 청소기 본체의 이동이 가능하도록 하는 하나 이상의 메인 바퀴; 및 상기 청소기 본체의 이동을 가이드하는 보조 바퀴 유닛이 포함되고, 상기 보조 바퀴 유닛은, 상기 청소기 본체에 수평 회전 가능하게 결합되는 회전 부재와, 상기 회전 부재에 결합되며 수직 회전하는 제 1 바퀴 및 제 2 바퀴가 포함되며, 상기 제 1 바퀴는 바닥면에 접하고, 상기 제 2 바퀴는 바닥면으로부터 이격되는 것을 특징으로 한다.  
       
     진공 청소기
Patent KR-20080046570-A (KR)
Title: Thermal conductive composition
Inventor: MISAKI YUKINORI
IPC: C09K5/14
Filed: 2007-11-19
Abstract: A thermally conductive composition, and a part prepared by using the composition are provided to improve the heat radiating property of a heat radiator or a high temperature body, thereby enhancing the cooling efficiency of an electronic device or a sputtering device. A thermally conductive composition comprises a semisolid organic compound or a flexible solid organic compound; and 0.1-3.0 wt% of expandable graphite. Preferably the semisolid organic compound is grease; the flexible solid organic compound is rubber; and the expandable graphite is a ground expandable graphite powder. A part comprises a heat radiator; and a heat radiating unit which radiates the heat generated by the heat radiator and is provided with the thermally conductive composition.
Patent KR-20090054340-A (KR)
Inventor: PARK SE HO
IPC: H04W4/16
Filed: 2007-11-26
Abstract: 본 발명은 멀티미디어 통화연결음/메시지 서비스를 위한 이동통신 단말기/시스템 및 방법에 관한 것이다. 즉, 본 발명은 멀티미디어 통화연결음/메시지 서비스를 수행하는 이동통신 시스템에 있어서, 이동통신 단말기 사용자가 사전에 선호하는 주요 통화 상대방을 지정하거나 시스템에 의해 사용자별 통화 빈도가 높은 주요 통화 상대방을 지정하도록한 후, 시스템과 이동통신 단말기와의 연동을 통해 주요 통화 상대방의 통화연결음 또는 통화연결 메시지 콘텐츠를 사전에 다운로드하여 저장하여 둠으로써, 통화 시 이동통신 단말기에서 통화연결음/메시지 서비스 수행에 소요되는 시간 지연을 최소화할 수 있다.  
       
     멀티미디어, 통화연결음, 통화연결메시지, 친구, 발신, 착신
Patent KR-20090061251-A (KR)
Title: Display device
Inventor: CHO JUNG MIN
IPC: G02F1/1333
Filed: 2007-12-11
Abstract: A display device is provided to prevent the strength of side walls from being weaken without forming holes on the side walls by making a coupling unit connected to a support unit. A display device comprises a chassis, a mold frame(120), a coupling unit and a driving substrate(200). The chassis comprises a support unit. The support unit is extended from side walls and inner sides of the side walls. The mold frame is arranged inside the chassis. The coupling unit is fixed to the mold frame. The coupling unit passes through the support unit to be coupled with it. The driving substrate is arranged at lower parts of a display panel which is arranged inside the chassis and the chassis. The driving substrate operates the display panel.
Patent KR-20090062150-A (KR)
Title: Slide hinge having non-clearance structure in portable terminal
Inventor: KIM JIN YONG
IPC: H04B1/38
Filed: 2007-12-12
Abstract: A slide hinge of a portable terminal having a clearance prevention structure preventing a transverse movement is provided to prevent the occurrence of width flow by forming a hooking step to both ends of a second slide hinge bottom. A first slide hinge(40) is installed at single-side of a first main body. The first slide hinge forms a guiding bump protruded in both sides. A second slide hinge(50) is connected to the single-side facing the single-side of the first main body and a second main body. The second slide hinge is combined in the first slide hinge in order to be positioned between both sides of the guiding bump. The second slide hinge forms a jaw setting on the guiding bump on the bidirectional end of the bottom.
Patent KR-20090064971-A (KR)
Title: Zinc oxide nanorods having uniform morphology and method for manufacturing the same
Inventor: KIM SANG WOO
IPC: B82B3/00
Filed: 2007-12-17
Abstract: Zinc oxide nano-rods having uniform morphology and a manufacture method thereof are provided to improve reliability of devices employing the zinc oxide nano-rods. A method for preparing zinc oxide nano-rods having uniform morphology comprises: a first crystal-nucleus manufacturing step of preparing a crystal nucleus with zinc acetate; a second crystal growth step of putting the crystal nucleus in a zinc nitrate solution and growing the zinc oxide crystal; and a third annealing step of annealing the grown zinc oxide crystal. The temperature of the annealing step is at 400-600°C. The annealing step lasts for 10-30 minutes. The crystal growth step is performed at 50-120°C. The crystal-nucleus manufacturing step is performed by diluting zinc acetate powder in acetone under the normal pressure at 50-120°C.