baber/WOPTO huggingface dataset:
Patent KR-20110091263-A (KR)
Title: Apparatus for driving light emitting diode
Inventor: GOO DAE HO
IPC: H05B37/02
Filed: 2010-02-05
Abstract: PURPOSE: An apparatus for driving an LED(light emitting diode) is provided to integrally apply an LED drive unit to the various size of LED devices and use the LED drive unit by controlling the size of the current outputted in the LED drive unit through the variable resistance. CONSTITUTION: An apparatus for driving an LED(light emitting diode)(100) comprises a power supply unit(110), an LED driving unit(120), an output current controller(130), and an LED module(140). The LED driving unit runs the LED module by getting a power source from the power supply unit. The output current controller controls the size of the current outputted in the LED driving unit. The output current controller controls the size of the current outputted from the LED driving unit with the size of the control voltage from the LED driving unit.
Patent KR-20110098407-A (KR)
Inventor: KIM KYO SEON
IPC: C23C16/505
Filed: 2010-02-26
Abstract: 본 발명은 광촉매 박막이 코팅된 고분자 비드를 제조하는 방법으로서, 상기 광촉매 박막은 플라즈마 화학기상법에 의해 상기 고분자 비드에 코팅되는 것을 특징으로 하는 광촉매 박막이 코팅된 고분자 비드의 제조방법으로, 본 발명에 의하면, 광촉매 박막이 균일하게 코팅된 고분자 비드가 수표면에 위치하여 태양광을 최대한 흡수하여 광분해 반응에 의한 수질오염물질의 제거를 효율적으로 할 수 있다.
Patent KR-20110106964-A (KR)
Inventor: LEE SANG JIN
IPC: H01B9/02
Filed: 2010-03-24
Abstract: 본 발명은 전력케이블에 관한 것으로서, 절단된 전력케이블에서 전력케이블의 내부 구성요소가 누출되는 것을 방지할 수 있도록 구성한 전력케이블의 말단부 및 말단처리방법을 제공하는 데 그 목적이 있다. 
상기와 같은 목적을 달성하기 위한 본 발명의 전력케이블의 말단부는 절단된 전력케이블의 말단 둘레에 합성수지의 고착부가 고착되어 전력케이블 내부의 오일 또는 콤파운드의 누출을 차단하는 것을 기술적 특징으로 하며, 그에 따른 전력케이블의 말단처리방법은 절단된 전력케이블의 말단에 합성수지를 분사하는 단계와, 분사된 합성수지가 전력케이블 말단면 및 원주면 둘레에 도포하는 단계와, 도포된 합성수지가 경화되어 전력케이블에 고착되는 단계를 포함하는 것을 기술적 특징으로 한다.
Patent KR-20100109467-A (KR)
Title: Apparatus and method for pivotal mounting of a doctor blade assembly in a paper machine
Inventor: LOIPPO KIMMO
IPC: D21G9/00
Filed: 2010-03-30
Abstract: PURPOSE: The tubular member of the pivot mounting unit is individually singled out. The mount of the pivot mounting unit for the maintenance is simplified. CONSTITUTION: The doctor blade assembly within the paper machine. With the blade holder(2) holding the doctor blade. It is included of the supporting member(3) installing on the initial paper frame. The connection of the supporting member and blade holder. It is applied to on the supporting member separate pivot mounting unit(4) is included.
Patent KR-20100109522-A (KR)
Title: Wireless communication device, wireless communication system, and method for detecting receive timing of direct wave
Inventor: MIYATANI TETSUHIKO
IPC: H04L27/20
Filed: 2010-03-31
Abstract: PURPOSE: A wireless communication device, a wireless system and a method for detecting a receiving timing of direct wave are provided to not to increase the transmitting power of wireless terminal, thereby detecting a receiving timing of direct wave in high precision. CONSTITUTION: A CP(Cyclic Prefix) removing unit removes a guide interval from a receiving signal. A FFT(Fast Fourier Transform) unit(206) performs a FFT of the receiving signal. A filter(208) removes a frequency component of a frequency band which is not used in a receiving signal. A multiplier(222) performs a division of a pilot signal or a transmission data signal about an addition signal of an adder(210). A delay unit(212) delays the addition signal to the time Ts. An IFFT(Inverse Fast Fourier Transform) unit(216) performs the IFFT to the signal. An arrival time difference calculator(220) detects a receiving timing of a direct wave corresponding to each antenna.
Patent KR-20110018257-A (KR)
Title: Apparatus for determinating position using pseudo satellite and system thereof
Inventor: LEE SANG UK
IPC: G01S5/02
Filed: 2010-04-05
Abstract: PURPOSE: A positioning apparatus and a system for the same using pseudolite are provided to be economically fabricated by obtaining the function of a pseudolite system using a single clock. CONSTITUTION: Four or more pseudolites(111, 112, 113, 114, 115) generate and output navigation pseudolite codes. The navigation pseudolite codes are a PRN code which is the same as a GPS signal. Antennas transmits signals outputted from each pseudolite by corresponding the signal to the pseudolite. One synchronizing clock(110) provides synchronizing clocks to each pseudolite. Each pseudolite outputs correction information in order to correct time.
Patent KR-20110112543-A (KR)
Inventor: KIM SUNG WOO
IPC: G02F1/1333
Filed: 2010-04-07
Abstract: 본 발명의 일 실시 예에 따른 백라이트 유닛은 제 1 층, 상기 제 1 층 상에 위치하며, 광을 방출하는 복수의 광원들 및 상기 제 1 층의 전면에 위치하고, 상기 제 1 층 상에 위치한 상기 복수의 광원들의 적어도 일부를 감싸는 제 2 층;을 포함하며, 상기 복수의 광원들은, 복수의 리드 프레임을 포함하며, 캐비티가 형성된 몰드부, 상기 리드 프레임과 연결되며, 상기 캐비티에 실장된 수직형 또는 수평형의 발광 소자, 상기 발광 소자가 실장된 캐비티에 채워진 색변환층 및 상기 몰드부의 적어도 일면에 형성된 방열부재를 포함할 수 있다.
Patent KR-20110114360-A (KR)
Inventor: LEE DONG UNG
IPC: A61P25/00
Filed: 2010-04-13
Abstract: 본 발명은 생약재 발효 추출물의 제조 방법 및 이로부터 제조된 생약재 발효 추출물을 유효성분으로 포함하는 신경퇴행성 질환의 예방 또는 치료용 조성물에 관한 것이다. 본 발명에서는 석창포, 원지, 천마, 회향, 복령, 삼릉, 삼칠 및 신이로 이루어지는 생약재 발효 추출물이 뇌신경전달물질인 아세틸콜린을 분해하는 아세틸콜린에스테라아제를 억제하는 효과가 있어 기억력 감퇴 예방 및 치료, 건망증 치료, 치매 예방 및 치료, 학습능력을 향상시킬 수 있으므로, 이를 활용하여 신경퇴행성 질환의 예방 또는 치료용 건강식품 또는 약학적 조성물로 활용할 수 있을 것이다.
Patent KR-20100124203-A (KR)
Title: Silicone antifoam particles
Inventor: BECKER RICHARD
IPC: C08K5/04
Filed: 2010-04-21
Abstract: PURPOSE: A silicone antifoaming particle is provided to economically produce the silicone antifoaming particle, and to secure the excellent compatibility with a porous carrier material. CONSTITUTION: A silicone antifoaming particle contains the following: a porous copolymer including urea or melamine, and alkanal; and an anti-foam agent composition in a liquid phase at 0 deg C. The copolymer is a condensation product of the urea or the melamine, with the alkanal marked with chemical formula 1: O=CH-R.
Patent KR-20100047212-A (KR)
Title: Fringe-field switching(ffs) liquid crystal device
Inventor: LEE SEUNG HEE
IPC: G02F1/1343
Filed: 2010-04-26
Abstract: PURPOSE: A fringe field switching liquid crystal device is provided to minimize noisy electric fields from a signal line which influences a pixel electrode and a corresponding electrode. CONSTITUTION: A black matrix(11) or respective resins for expressing color with array elements are formed on the same substrate. The location of each resin for expressing the black matrix or the color is formed between a pixel electrode(10) and a counter electrode(13). The pixel electrode is connected to a source electrode(8). The counter electrode faces the pixel electrode. The black matrix covers part or the entire thin film transistor.
Patent KR-20110123885-A (KR)
Title: Apparatus for heating roller used in caterpillar
Inventor: RYU KI SEUNG
IPC: C21D9/36
Filed: 2010-05-10
Abstract: PURPOSE: A device for heating a roller for caterpillar is provided to improve productivity by increasing the length of a belt which heats a roller for caterpillar. CONSTITUTION: A device for heating a roller for caterpillar comprises a furnace(160), a driving belt(162), a belt driving part(150), a belt supporting unit and a belt tension retaining unit. The furnace comprises a heater heating a roller(20) for an endless track. The driving belt is located along a longitudinal direction of the furnace. The driving belt transfers a roller for an endless track. The driving belt comprises an upper belt and a lower belt. The upper belt comprises a roller for an endless track. The lower belt is separated with the upper belt. The belt driving part is located on both ends of the driving belt. The belt driving part moves the driving belt to a specified direction. The belt supporting unit supports the driving belt at a longitudinal direction. The belt supporting unit comprises an upper belt support roller and a lower belt support roller. The belt tension retaining unit keeps the tension of the driving belt.
Patent KR-20110125092-A (KR)
Title: A method for injecting and planar orienting cholesteric liquid crystal to lcd
Inventor: JUNG GAP HA
IPC: G02F1/1341
Filed: 2010-05-12
Abstract: PURPOSE: A method for injecting and planar-orienting a cholesteric liquid crystal to a LCD is provided to induce a planner-alignment of a cholestric liquid while injecting cholestric liquid without forming an alignment film on a substrate. CONSTITUTION: A method for injecting and planar-orienting a cholesteric liquid crystal to a LCD includes a step of preparing a liquid crystal cell for a liquid crystal display device with a liquid crystal injection which is opened to enable one surface to have the same length with the length of a liquid filling space. A first rectangular substrate and a second rectangular substrate are located to face each other. Between the first and second substrate, a cell cap is maintained.
Patent KR-20110126844-A (KR)
Inventor: JEONG GYU SEONG
IPC: F24H1/10
Filed: 2010-05-18
Abstract: 본 발명은 탄소히터를 이용한 온수생성장치에 관한 것으로, 탄소히터(110); 투명재로 구성되고, 상기 탄소히터(110)가 내부에 삽입되며, 양단부에 물이 유입되는 유입구(120a-a)와, 물이 유출되는 유출구(120a-c)가 각각 형성되고, 물의 유동과정에서 상기 탄소히터(110)의 적외선 방사에 의해 열전달가능한 유로(120a-b)를 상기 탄소히터(110)의 외면 사이에 제공하는 제1하우징(120a); 및 상기 제1하우징(120a)이 내부에 삽입되며, 상기 제1하우징의 유출구(120a-c)와 연통되고, 상기 제1하우징의 유출구(120a-c)와 반대되는 일단부에 유출구(120b-c)가 형성되며, 상기 제1하우징(120a)을 투과하는 적외선에 의해 열전달가능한 유로(120b-b)를 상기 제1하우징(120a)의 외면 사이에 제공하는 제2하우징(120b);을 포함하여 구성되는 것을 기술적 요지로 하여, 탄소히터를 이용하여 단시간에 고온의 온수를 생성할 수 있도록 하는 탄소히터를 이용한 온수생성장치에 관한 것이다.
Patent KR-20110127881-A (KR)
Title: Apparatus and method for sensing data using concentration scan
Inventor: PARK JAE HONG
IPC: H04N7/18
Filed: 2010-05-20
Abstract: PURPOSE: A data detection apparatus and method thereof are provided to perform the recognition function of a light source and the reception unit function of optical communication data through a camera using the intensive scanning function of the camera. CONSTITUTION: A multiplexer unit(120) outputs location information about pixels of detected images A control unit(130) searches specific area from an output image. The control unit intensively scans the specific area through the outputted location information. The control unit outputs a scan result signal. A filter unit(140) eliminates the source of a specific frequency bandwidth from the output signal of the control unit.
Patent KR-20110128663-A (KR)
Title: Printed circuit board and the method of manufacturing thereof
Inventor: PARK SUNG KEUN
IPC: H05K3/18
Filed: 2010-05-24
Abstract: PURPOSE: A printed circuit board and a manufacturing method thereof are provided to form a sol-gel layer between circuit wires of a circuit layer, thereby preventing electrical disconnection. CONSTITUTION: A metal substrate(10) is prepared. An anode oxidizing layer(20) is formed by anodizing the frontal surface of the metal substrate. The anode oxidizing layer is formed on circuit layers(30,31). A photo catalyst is coated between circuit wires of the circuit layers which expose the anode oxidizing layer and the photo catalyst is hardened to form a first sol-gel layer(50).
Patent KR-20110130296-A (KR)
Title: A self noise suppressing voltage controlled oscillator
Inventor: CHOI YOUNG SHIG
IPC: H03B5/08
Filed: 2010-05-27
Abstract: PURPOSE: A self-noise removal voltage controlling oscillator is provided to reduce the noises of a ring oscillator by forming a negative feedback loop with the ring oscillator, a divider, and a frequency to voltage transformer. CONSTITUTION: A phase frequency detector(100) outputs an up-signal or a down-signal according to the phase difference of an input clock and a feedback clock. A charge pump(200) outputs a current which is proportional to the up-signal and the down-signal which are outputted in the phase frequency detector. A loop filter(300) outputs a voltage by smoothing the current which is outputted in the charge pump. A voltage controlling oscillator(400) outputs a frequency based on the voltage outputted in the loop filter. A divider(500) divides the output frequency of a voltage control phase delay part. A frequency to voltage transformer(600) eliminates the noises of the voltage controlling oscillator by feeding back the voltage corresponding to the frequency, which is divided in the divider, to the voltage controlled oscillator .
Patent KR-20100128261-A (KR)
Title: Substrate for blank mask, blank mask and manufacturing method thereof
Inventor: NAM KEE SOO
IPC: H01L21/027
Filed: 2010-05-27
Abstract: PURPOSE: A blank mask substrate, a blank mask, and a method for manufacturing the same are provided to regulate the planarity and the surface roughness of a transparent substrate for the blank mask by adopting a 1-hole carrier with a groove to a polishing process. CONSTITUTION: A binary blank mask is composed of a transparent substrate, a metal film, and a resist film. A phase-inversion blank mask is composed of the transparent substrate, a phase-inversion film, the metal film, and the resist film. The thickness of the transparent substrate is more than or equal to 6.3mm, and the size of the transparent substrate is 150x150±0.2mm. The blank mask inserts synthetic quartz glass to the center hole of a carrier. A polishing process with respect to the effective area(A') of the synthetic quartz glass is performed.
Patent KR-20110136481-A (KR)
Title: Valve assembly of ice maker tank
Inventor: CHEON WOO CHEOL
IPC: F25C1/22
Filed: 2010-06-15
Abstract: PURPOSE: A valve assembly of an ice-maker water supply tank is provided to prevent the water leakage of a supply tank through a vent and a switching structure of a spherical valve body and the vertical drop water supply through the vent which is formed to slope. CONSTITUTION: A valve assembly of an ice-maker water supply tank comprises a vent(310), a valve body(320) and an operation aperture(330). The vent is formed in the water supply tank(200). The valve body opens and closes the vent. The operation aperture is inserted into the vent, and transfers the valve body and opens the vent. The vent is formed to be slopingly downward and is a spherical shape in order to be transferred the inner side of the aperture.
Patent KR-20110138317-A (KR)
Title: Drinking ice
Inventor: KIM KI OK
IPC: A23L2/38
Filed: 2010-06-19
Abstract: PURPOSE: Drinking type ice, and a producing method thereof are provided to enable users to obtain the ice by concentrating a beverage, and to drink the ice by diluting with drinking water. CONSTITUTION: A producing method of drinking type ice comprises the following steps: concentrating and freezing a beverage with the sweetness; mixing the obtained ice and drinking water in a ratio of 1:1; and controlling the number of ice cubes for adjusting the sweetness and the flavor of the beverage before drinking.
Patent KR-20110138666-A (KR)
Title: Magazine for semiconductor package
Inventor: YOU HO SANG
IPC: H01L21/02
Filed: 2010-06-21
Abstract: PURPOSE: A magazine for a semiconductor package is provided to certainly prevent a stopper from being freely unlocked, thereby effectively fixing a semi-product. CONSTITUTION: A slot(150) is formed on the inner wall side of a main body(100) wherein the slot supports a semi-product. A receiving groove(131) is formed on the top of the main body. Hook protrusions face each other wherein the hook protrusions are formed on both sides of an opening of the receiving groove. A stopper(200) includes a horizontal part(220) and a vertical part. A length adjusting pin(400) is combined with a lower pin axis(212) of the stopper.
Patent KR-20110138700-A (KR)
Title: Defrosting apparatus of window in car
Inventor: KIM YOUNG GEUN
IPC: B60S1/60
Filed: 2010-06-21
Abstract: PURPOSE: A device for removing humidity from a vehicle window is provided to remove humidity on an outside window of a vehicle by guiding the flow of air from the front side. CONSTITUTION: A device for removing humidity from a vehicle window comprises a first supporting plate(2), a second supporting plate(4), and multiple direction controllers(6) The first supporting plate and the second supporting plate are installed in the front surface of the car door, in which the side mirror is installed, and induce the flow of the air. The first supporting plate and the second supporting plate are axis-connected each other. The direction control outlet is installed between the first supporting plate and the second supporting plate and guides the flow direction of the air. The direction control outlet is fixed to multiple hanging pieces(12), formed in the inner side of the first supporting plate and the second supporting plate.
Patent KR-20110139543-A (KR)
Title: Three dimensional lattice truss structures and manufacturing method of the same
Inventor: KANG KI JU
IPC: B21F27/10
Filed: 2010-06-23
Abstract: PURPOSE: A three-dimension lattice truss structure and a method for manufacturing thereof are provided to improve aerodynamic property and mechanical property by controlling the density of a wire in a fixed space. CONSTITUTION: A three-dimension lattice truss structure comprises multiple wire groups and a separate wire group. Multiple wire groups is connected with each other and arrayed to be a two dimension truss net. The separate wire group exists on the middle point of the connection point which connects multiple wires. The separate wire group is connected to two dimension truss net in a perpendicular direction. The multiple wire groups and the separate wire group have different pitches and diameters.
Patent KR-20120000119-A (KR)
Title: Cmp pad conditioner and its manufacturing method
Inventor: KIM SHIN KYUNG
IPC: H01L21/304
Filed: 2010-06-25
Abstract: PURPOSE: A chemical mechanical polishing(CMP) pad conditioner and a manufacturing method thereof are provided to control height with respect to each diamond abrasive grain, thereby easily arranging the diamond abrasive grains with a desired position, number, and height on a basic material. CONSTITUTION: A first mask layer which includes a first hole and second hole with different sizes is arranged on the surface of a metal basic material(110). A first underlying plating layer(122) and second underlying plating layer(124) with different heights are arranged on the surface of the metal basic material by plating within the first hole and second hole. The first mask layer is eliminated from the surface of the metal basic material. A second mask layer is arranged on the surface of the metal basic material. Diamond abrasive grains(130) are arranged one by one on the surface of the metal basic material.
Patent KR-20120001305-A (KR)
Title: Variable pitch propeller with rake angle
Inventor: LEE SANG GU
IPC: B63H3/00
Filed: 2010-06-29
Abstract: PURPOSE: A variable-pitch propeller with a rake is provided to reduce the thrust loss of a ship by minimizing vortex zone generated when fluid flows in the propeller and the fluid flows out from a hub cap. CONSTITUTION: A variable-pitch propeller with a rake comprises a gear casing, a hub, and propeller blades(10). The gear casing is installed in a tunnel in which fluid flows and comprises a shaft unit connected to a main engine. The hub is coupled with the shaft of the gear casing. The propeller blades are attached to the surface of the hub. The propeller blade is inclined toward the opposite direction of the gear casing which faces to the propeller at a constant angle from the reference line(Z) of the propeller.
Patent KR-20120001331-A (KR)
Title: 분할형 선루프 디플렉터
Inventor: KIM DO WON
IPC: B60J7/05
Filed: 2010-06-29
Abstract: 본 발명은 후단부가 루프패널의 개구부 양측에 힌지구조로 결합되어, 전단부가 선루프 프레임의 내부에 상하방향으로 출입가능하게 장착된 지지대; 상기 지지대의 전단부 양쪽 내측에 상하방향으로 엇갈리면서 이동가능하게 장착된 제1 및 제2디플렉터몸체; 및 상기 제1 및 제2디플렉터몸체를 상하방향으로 엇갈리게 이동시키기 위한 구동수단;을 포함하고, 상기 개구부를 개폐하는 선루프 글라스를 완전히 개방하여 전후이동프레임을 최대로 후진시킨 경우에 상기 제1 및 제2디플렉터몸체를 상기 구동수단에 의해 상하방향으로 펼침으로써, 공기유동방향을 상향경사지게 안내하여 루프패널 뒤로 넘기도록 제1 및 제2디플렉터몸체의 면적을 증가시켜 저속/중속 주행시 드론 노이즈를 저감할 수 있는 분할형 선루프 디플렉터를 제공한다. 
또한, 고속 주행시 선루프 글라스의 열림량을 줄여 상기 제1 및 제2디플렉터몸체의 면적을 감소시킴으로써, 고속 주행시 풍절음을 저감할 수 있다.
Patent KR-20100090231-A (KR)
Title: Multi-directional input appratus
Inventor: JO WON HYUNG
IPC: H04B1/38
Filed: 2010-07-20
Abstract: PURPOSE: A multi direction slide input device of a portable terminal is provided to minimize the thickness of a terminal. CONSTITUTION: A Y-axis movement stage(300) comprises a safety-receiving surface on which at least one key input device is mounted. A wall is formed on the circumference of the safety-receiving surface. A Y-axis sliding unit is formed in the wall in order to move vertically in a space hole. An operation manipulating unit with movable contact points connected with a key input device is spaced on the external side of the wall. A circuit board(400) is mounted on the safety-receiving surface of the Y-axis movement stage.
Patent KR-20120009867-A (KR)
Title: Improved Method for Concentrating and Assaying Bacteria
Inventor: MIN JUN HONG
IPC: C12N1/06
Filed: 2010-07-22
Abstract: PURPOSE: A method for concentrating and detecting a bacteria sample is provided to effectively concentrate the sample and to enable concentration-amplification-detection of bacteria in a single chamber. CONSTITUTION: A method for diagnosing bacteria comprises: a step of contacting bacteria-containing sample on the surface of hydrophilic solid; a step of performing cell lysis of the concentrated bacteria; and a step of adding an amplification solution to cell lysate and amplifying. The single chamber is a single tube type having an inlet and an outlet. The surface of the solid is treated with silane compounds of TEOS, APTS, HMTS or CETES.
Patent KR-20120014496-A (KR)
Title: Advertisement/publicity system and method thereof
Inventor: KIM HYUNG SOO
IPC: G06Q30/00
Filed: 2010-08-09
Abstract: PURPOSE: An advertisement and publicity method is provided to disclose information which a customer desires and receives a desired mobile message by registering a sender condition to a server of an operator. CONSTITUTION: A client subscription unit(21) sets up the identity information type of a client. A category unit(22) sets up the category of an advertisement and publicity message. A rebate unit(23) sets up a rebate condition including rebate price. A recommender register(24) sets up a key value for matching a recommender and the client.
Patent KR-20110073222-A (KR)
Title: Graphene dispersions and graphene-ionic liquid polymer composites
Inventor: SUH KWANG SUCK
IPC: C08K3/04
Filed: 2010-08-17
Abstract: PURPOSE: A graphene dispersion solution production method and a graphene - ionic liquid polymer composite and a method are provided to manufacture graphene dispersed solution by putting graphite into the ionic liquid and dispersing, to polymerize if ionic liquid is monomer in the graphene dispersion solution production and to use a high polymer ionic liquid. CONSTITUTION: The graphene dispersed solution in which the graphite is dispersed in the ionic liquid. The graphite is the graphite, graphite which is oxidized and reduced and heat-treated with high temperature, The dispersion is out of mixing and the ionic liquid is a monomer form of compound consisting of the combination of the negative ion and the positive ion or a polymer form, and one is used among these components or two or greater are mixed and used.
Patent KR-20120017318-A (KR)
Title: Semiconductor light emitting device and manufacturing method of the same
Inventor: SHIN YOUNG CHUL
IPC: H01L33/36
Filed: 2010-08-18
Abstract: PURPOSE: A semiconductor light emitting device and a manufacturing method thereof are provided to improve stability and productivity of a process by forming a transparent conductive layer in the light emitting device by a sputtering method. CONSTITUTION: An n-type semiconductor layer and a p-type semiconductor layer are prepared. An active layer(30) is arranged between the n-type semiconductor layer and the p-type semiconductor layer. An ohmic electrode part is formed in one side of the p-type semiconductor layer. The ohmic electrode part comprises a structure in which a n-type tunneling layer(51) and a transparent conductive layer are successively laminated. The doping concentration of the n-type tunneling layer is higher than the doping concentration of the n-type semiconductor layer.