baber/WOPTO huggingface dataset:
Patent KR-20080073555-A (KR)
Title: Master batch containing fragrance or deodorant, plastic products using the same and method for manufacturing thereof
Inventor: WOO JAE GON
IPC: C08K7/22
Filed: 2007-02-06
Abstract: A master batch containing an aromatic or deodorant is provided to effectively prevent a loss of an aromatic or deodorant caused by heat during storage and molding through a capsule or impregnation structure. A master batch(123) containing an aromatic or deodorant(129) is formed of many particles having capsules(127) within, and is mixed with a main material of plastic products. The capsule has a structure in which an aromatic or deodorant is contained in the inside of the capsule and synthetic resin is wound around the outside, and comprises a coating film to prevent the aromatic or deodorant from being destroyed by heat of fusion applied during molding of plastic products.
Patent KR-20080073812-A (KR)
Title: Membrane-electrode assembly of fuel cell and fuel cell
Inventor: LEE CHANG SONG
IPC: H01M4/86
Filed: 2007-02-07
Abstract: A membrane-electrode assembly for a fuel cell is provided to improve the ion conductivity by maintaining a sufficient moisture content even when reducing or excluding external moisture supply, thereby improving the quality of a fuel cell. A membrane-electrode assembly for a fuel cell comprises: an electrolyte membrane(201); and an anode and a cathode disposed opposite to each other with the electrolyte membrane interposed therebetween, and each having a catalyst layer(203,205) and a gas diffusion layer. The gas diffusion layer comprises a substrate(209a,209b), and a microporous layer(207a,207b) formed on the opposite surface to the catalyst layer, wherein the microporous layer comprises an inorganic material selected from the group consisting of conductive powder, hydrophobic additives, silica powder, calcium chloride and soda lime(CaO+NaOH).
Patent KR-20080073888-A (KR)
Title: Clamping band for constant velocity joint
Inventor: KIM DAE HWAN
IPC: F16B2/08
Filed: 2007-02-07
Abstract: A clamping band for a constant velocity joint is provided to prevent oil from leaking from the inside of a boot by preventing the deformation of a clamping band when the clamping band is coupled. A clamping band(10) includes a plurality of holes(11,12,13) such that the clamping band is coupled to a boot. The clamping band has locking parts(14,15,16) such that the holes are inserted into the locking parts. The number of the holes is identical to the number of the locking parts. An ear part(17) protrudes from the clamping band. The whole profile of the clamping band mates the profile of the ear part such that the coupling strength between the holes and the locking parts is more increased.
Patent KR-20080088673-A (KR)
Title: Apparatus for purchasing agency of cyber money at pc-cafe and system for purchasing agency of cyber money
Inventor: KIM JEONG WOO
IPC: G06Q50/10
Filed: 2007-03-02
Abstract: A device and a system for providing a cyber money recharging service agency service in an Internet cafe are provided to enable users of the Internet cafe to easily recharge cyber money for using an online service without any complex procedure by enabling the Internet cafe to recharge an online service account of the user by proxy. An Internet cafe user interface device(12) is installed to each PC of an Internet cafe and enables a user of the Internet cafe to transfer a request message for recharging a predetermined online service account to an Internet cafe management server. An internet cafe manager interface device(14) is installed in an Internet cafe manager PC, and recharges the requested online service account by communicating with a recharging relay server(16) for recharging the online service account by proxy when the request message for recharging the online service account is received from the Internet cafe user interface device. The Internet cafe user interface device includes an input unit(12-1) for receiving an online service kind/account and a recharging amount from the user, a transmitter(12-2), and a response receiver(12-3) displaying a response message received from the Internet cafe manager interface device. The internet cafe manager interface device communicates the recharging relay sever through a communication network(16).
Patent KR-20070034557-A (KR)
Title: 악필글씨교정노트
IPC: G09B11/00
Filed: 2007-03-08
Abstract: 본 발명은 악필글씨교정노트에 관한 것으로 한글이나 한자 글씨를 잘 쓰지 못하는 컴퓨터세대는 필기구보다는 마우스를 먼저 잡는 법을 배울 정도로 컴퓨터 사용이 일반화 되면서 글씨를 못 쓰는 초, 중, 고 학생이 늘고 있다. 
     또한 글씨를 쓸 때 많은 학생들이나 성인들은 노트를 좌측으로 기울여서 쓰거나 손목을 꺾어서 필기를 하는 사용자가 많다. 
     이것은 일반 수평으로 쓰는 정자체형의 글씨체가 경사지게 글씨체를 올려 쓰는 경사체 글씨보다 빠른 습득과 편안하고 안정된 자세를 취할 수 없기 때문이다. 
     본 발명의 악필글씨교정노트는 글씨를 잘 쓰지 못하는 모든 악필인을 대상으로 한글, 한자등 여러 가지 글씨를 쓰기가 쉽고, 편안한 글씨체가 나오도록 보기가 좋고 잘 쓴 유명한 선조들의 한글, 한자 서체와 서예가의 글씨체, 한글, 한문 펜글씨교본의 글씨를 총 망라하여 경사지게 쓴 경사글씨체에서 글자의 경사각도와 연관하여 글씨가 바르고, 쓰가 편하고, 쉽게 습득이 되는 쓰기 쉬운 경사각도 평균13도와 초등학교 국어쓰기에서 글자의 폭을 결정해 주는 글자 짜임의 두 수직선에 글자의 자음과 모음의 크기를 결정하는 칸을 블록화 하고 블록위치 사각형에 등간격의 경사선과 등사분선을 그려 블록위치글씨교정선 틀을 만들어 글씨연습을 하면 글자의 자음과 모음의 크기를 바로 알고 습득할 수 있어 글자의 바른 형상과 모양을 잡아주고 변형을 막아 절대로 잘못된 글씨를 쓰지 못하도록 하여 글씨의 빠른 교정과 바르게 습득 할 수 있게끔 악필인의 학습효과 증대와 더불어 한글, 한자 등 여러  가지 글씨체를 동시에 습득 할 수 있는 악필글씨교정노트에 관한 것이다 
     본 발명은 종래의 글씨체 습득방식은 일반정자체 글씨를 보고 정사각형의 빈 칸에 글씨를 그대로 옮겨 쓰는 반복연습방식으로 악필글씨를 교정하는 사람들이 빈칸에 글씨를 쓰다보면 글씨체의 크기가 일정하지도 않고 글씨체 자체도 흉하게 변형되어 악필글씨교정의 어려움이 있다. 
     또한 정자체글씨는 수평으로 되어있어 수평글씨를 쓰게 되면 노트가 기울어지거나 자세가 불편하고 필기구에 힘이 들어가서 글씨를 쓰는 과정에서 비뚫어지거나 균형이 잡히지 않고 문장쓰기가 되면 글씨가 일정하지 않는 글씨체를 가지거나 결국 바른 습관이 되지 않는 글씨를 가지게 되어 글씨에 자신을 갖지 못하고 결국 흉한 글씨체를 갖는 사람이 많다. 
     본 발명은 글씨쓰기에서 쓰기 쉬운 경사각도 평균13도와 초등학교1학년 국어쓰기에서 글자 짜임의 두 수직선에 폭과 높이를 결정하고 글자의 자음과 모음의 일정한 크기를 결정하는 칸을 만들어 칸을 블록화 하고 블록화 된 사각형에 쓰기 쉬운 경사각도에 등간격의 경사선과 등 사분선 점선을 그려 블록위치글씨교정선 틀을 이용하여 글씨연습을 하는 방법으로 블록위치의 간단한 사용방법을 삽입하여 사용방법에 따라 글씨를 경사선 방향과 블록위치에 글자의 자음과 모음 크기를 형성해 주는 네모 칸들을 이용하여 글씨를 쓰는 것으로 한글의 일정한 크기연습과 자음과 모음크기를 균등하게 쓰는 능력배양으로 바른 글씨를 익히는 것이다. 
     자음과 모음크기가 결정되는 블록위치의 네모 칸들을 이용하여 한글, 한자 글씨를 반복 연습함으로서 글자의 크기가 일정하고 쓰기 편하고 일반 정자체보다  빠른 시간에 글씨가 교정이 되며 직접 글씨를 쓰면서 자음과 모음크기의 잘못된 글자를 바로 찾아 수정하면서 글씨연습을 함으로써 글씨쓰기의 흥미를 갖게 하고 호기심을 유발하여 글씨에 대한 자신감은 물론, 바른 글씨, 예쁜 글씨 등 글씨교정효과와 기존 정차체형 글씨 보다 빠르게 쓸 수 있어 흉한 글씨체를 가지고 있는 사람은 쉽게 바른 글씨를 배울 수 있다. 
     또한 한글, 한자의 글자체를 악필글씨교정노트에 인쇄된 악필교정노트 교재로 반복 연습하면 빠른 글씨교정과 학습효과의 증진은 물론 업무의 능률이 향상되고 글씨교정과 함께 일반 정자체는 물론 다양한 한글이나 한자를 한결 더 쉽게 쓸 수 있다는 장점이 있다. 
       
     악필글씨교정노트,글씨교정교본,악필교정,글씨교정,바른글씨,예쁜글씨
Patent KR-20080082827-A (KR)
Title: Thin film transistor and fabricating for the same and organic light emitting diode device display comprising the same
Inventor: PARK BYOUNG KEON
IPC: H01L29/786
Filed: 2007-03-09
Abstract: A thin film transistor, a method for manufacturing the same, and an organic electro luminescent display comprising the same are provided to prevent a leakage current by removing a metal catalyzer remaining on a channel region of a semiconductor layer. A semiconductor layer(202) is located on a substrate(200) and includes a channel region(202C), source/drain regions(202S,202D), and an edge region. The edge region is formed on the channel region and the source/drain regions and includes a first impurity. A gate dielectric(204) insulates the semiconductor layer. A gate electrode(207) is insulated from the semiconductor layer by the gate dielectric. Source/drain electrodes(215S,215D) are electrically connected to the semiconductor layer. The first impurity is phosphorus. A wiring part is formed through contact holes(213S,213D) exposing the source/drain regions and the edge region. The wiring part is the source/drain electrode.
Patent KR-20070035547-A (KR)
IPC: E04D1/02
Filed: 2007-03-12
Abstract: 본 발명은 시공성과 방재성을 향상시킨 평판형 점토기와에 관한 것이며 점토기와를 횡방향으로 시공할 때 견고한 결합이 이루어질 수 있도록 기와의 전후면에 요홈부와 돌출부를 구비하고, 점토기와가 지붕의 경사면에서 몰탈로 습식 시공할 때 미끄럼이 발생 되지 않도록 요철부를 구비하여 시공성과 방재성을 향상함에 목적이 있다. 
     본 발명은 평판형 점토기와의 표면 좌측 상부에는 요홈부를, 동 요홈부와 대응되는 이면에는 요철부를, 이면의 우측 상부에는 돌출부를 형성하여서 구성된다. 
     상기와 같은 본 발명은 건물지붕에 본 발명의 평판형 점토기와를 시공하게 되면 횡방향으로는 요홈부에 돌출부가 끼워져 결합 고정되고, 건물지붕의 바닥에 몰탈을 얹고 점토기와를 올려서 고정하는 습식 시공시에는 몰탈이 점토기와의 요철부와 결합 되어 미끄럼이 발생 되지 않아 시공성이 향상되고, 시공 후에는 결합력이 향상되어 비바람에 이탈되지 않는 안전성과 방재성이 뛰어난 발명이다. 
       
     점토기와, 시공성, 방재성, 요홈부, 요철부
Patent KR-20080085286-A (KR)
Inventor: SUN JUN HYEUB
IPC: H01L21/027
Filed: 2007-03-19
Abstract: A method for forming a semiconductor device is provided to improve morphology and to secure an etch margin by forming a pattern on an amorphous carbon layer using a hard mask. An amorphous carbon layer(12) is formed on a target etching layer(11). An MFHM(Multi Function Hard Mask) layer(13) is formed on the amorphous carbon layer. A photoresist pattern(14) is formed on the MFHM layer. The MFHM layer is etched by using the photoresist pattern as a mask. The amorphous carbon layer is etched by using the etched MFHM layer as an etching barrier. The target etching layer is etched by using the amorphous carbon layer as an etching barrier. The target etching layer includes an aluminium layer. CVD(Chemical Vapor Deposition) is performed to form the amorphous carbon layer. A thickness of the amorphous carbon layer is 1000 to 5000 Å. The MFHM layer contains silicon.
Patent KR-20070041470-A (KR)
Inventor: TAKAI KENJI
IPC: H05K3/38
Filed: 2007-03-22
Abstract: 본 발명의 한 실시 형태는 에폭시 수지를 필수 성분으로 하는 접착 보조제의 층이 금속 상에 0.1 내지 10 ㎛의 두께로 부착된 금속박에 관한 것이다.  또한, 본 발명의 한 실시 형태는 절연층과 절연층의 사이에 1층 이상의 접착 보조제층을 갖는 것을 특징으로 하는, 복수층을 갖는 다층 인쇄 배선판에 관한 것이다. 
       
     접착 보조제, 금속박, 인쇄 배선판, 에폭시 수지
Patent KR-20080088027-A (KR)
Title: 반도체 제조용 웨이퍼 및 이를 이용한 정렬마크 노광방법
Inventor: WOO JUNG OH
IPC: H01L21/02
Filed: 2007-03-28
Abstract: 본 발명에 따른 반도체 제조용 웨이퍼는 플랫존에 인접하여 배치되는 라벨과 평행하게 형성되는 제1 얼라인키부 및 노광영역이 아닌 에지부에 형성되는 제2 얼라인키부를 포함한다. 또한, 본 발명에 따른 정렬마크 노광방법은 웨이퍼를 프리 얼라이너에 로딩하고, 상기 프리 얼라이너로 하여금 상기 웨이퍼의 플랫존이 일방향에 있도록 정렬시키고, 상기 정렬이 이루어진 웨이퍼를 스테이지로 이송시키고, 상기 스테이지 상에 이송된 웨이퍼에 대하여 얼라인키에 의한 웨이퍼 회전유무를 감지하고, 상기 웨이퍼가 회전하지 않은 경우 노광 공정을 수행하고, 상기 웨이퍼가 회전한 경우 웨이퍼의 위치를 보정하여 노광 공정을 수행하는 것을 포함한다. 본 발명에 따르면 얼라인키를 갖는 반도체 제조용 웨이퍼를 통하여 웨이퍼를 정렬한 후 정렬마크를 노광할 수 있어 정렬마크의 노광불량을 방지할 수 있는 효과가 있다. 
       
     웨이퍼, 노광, 정렬마크
Patent KR-20080088093-A (KR)
Title: Method for forming metal interconnection layer of semiconductor device
Inventor: YEOM SEUNG JIN
IPC: H01L21/28
Filed: 2007-03-28
Abstract: A method for forming a metal wire of a semiconductor device is provided to prevent the exposure of the metal wire by forming an Ru layer on a surface of an upper portion of the metal wire when the metal wire is formed. A dielectric(110) is formed on a semiconductor substrate(100) where a lower structure is formed. The dielectric is etched to form a pattern(P) for a metal wire. A metal wire(120) is formed by gap-filling the pattern for a metal wire with a conductive layer. An Ru layer(130) is selectively formed only on a surface of the metal wire. An interlayer dielectric(140) is formed on the dielectric including the Ru layer. The interlayer dielectric is etched to form a hole(H) that exposes the Ru layer. The pattern for a metal wire is a contact hole and a trench. The metal wire is made of an aluminum layer or an aluminum alloy layer. The aluminum alloy layer is a layer containing copper or silicon. The metal wire is formed through at least one of PVD(Physical Vapor Deposition), CVD(Chemical Vapor Deposition), and ALD(Atomic Layer Deposition).
Patent KR-20080090207-A (KR)
Title: Panel and surface light source device and backlight unit having the same
Inventor: KIM HYUN SOOK
IPC: H01J1/30
Filed: 2007-04-04
Abstract: A substrate for a surface light source device and a backlight unit comprising the same are provided to improve the brightness and the uniformity of brightness, by forming a reflectance-reducing material layer on a light source body. A light source body has an inner space into which discharge gas is injected. A discharge voltage is applied to the discharge gas through an electrode(150). A first reflectance-reducing material layer(210) is formed on an outer surface of the light source body. The first reflectance-reducing material layer is a coating layer of SiO2, Y2O3, In2O3, SnO2, or ZnO. The light source body includes a first substrate and a second substrate facing each other. The inner space is disposed between the first substrate and the second substrate. The inner space is divided into a plurality of discharge spaces by a partition wall(121). The partition wall is integrated into at least one of the first substrate and the second substrate.
Patent KR-20080099515-A (KR)
Inventor: BAEK SANG EUN
IPC: G08G1/0969
Filed: 2007-05-09
Abstract: 본 발명은 다중 간격으로 항법 정보를 표시하는 항법 장치 및 상기 항법 장치의 동작 방법에 관한 것으로, 보다 구체적으로는 GPS 신호의 수신 주기 사이에서 다중 간격으로 항법 정보를 미리 예측하여 표시함으로써, 보다 부드러운 항법 정보를 제공한다. 
       
     항법 장치, 네비게이션, 다중 간격, GPS, 표시
Patent KR-20080099655-A (KR)
Title: Flip chip package
Inventor: KIM EUN KYUNG
IPC: H01L21/60
Filed: 2007-05-10
Abstract: The predetermined space is formed due to the insulating layer formed around the conductive pad of the substrate. The bump formed in the flip- chip is induced to the predetermined space. Therefore, the bump of the flip-chip and conductive pad of the top of the substrate can be accurately arranged and the exact electrical contact between the flip- chip and substrate can be made. The flip chip package comprises a flip- chip including the metal wiring and the bump(11) connected to the metal wiring(10), the substrate in which the conductive pad(21) connected to the terminal is formed in the surface within the cavity(22)(20), having a cavity. The bump of the flip-chip can be bonded to the conductive pad of substrate in the arranged state by the cavity. The underfill resin layer is formed on the top of the cavity including the flip-chip.
Patent KR-20080101215-A (KR)
Title: Reference bias circuit of compensating for process variation
Inventor: KIM HYUNG SEUK
IPC: G05F3/26
Filed: 2007-05-16
Abstract: A reference bias circuit compensating for process variation prevents or reduces the variation of a reference current or a reference voltage of the reference bias circuit by compensating for the variation of the diode characteristic generated by the process variation. A current mirror includes a pair of first conductive transistors which are connected between a power voltage line, a first node, and a second node, and have a common gate connected to each other. A voltage detecting unit is connected between the first node, the second node, and a ground voltage line and outputs a first input voltage and a second input voltage based on the respective voltage level of the first node and the second node. An operational amplifier(430) includes a second input terminal and an output terminal. The first input terminal receives the first input voltage and the second input terminal receives the second input voltage. The output terminal is connected to the common gate of the transistor pair(MP1,MP2). A compensating circuit(440) compensates for the change of the voltage of the first node in response to the control signal generated based on the voltage of the first node.
Patent KR-20080101946-A (KR)
Title: Pipe conduit opening waterproof apparatus for manhole repair
Inventor: YU JO UNG
IPC: H02G9/06
Filed: 2007-05-17
Abstract: A cable pathway waterproof apparatus for transmission/distribution is provided to waterproof water by separating a first half cylinder body and a second half cylinder body. A cable pathway waterproof apparatus for transmission/distribution comprises the followings: a first screw part(12a) in one side circumference surface; a first half cylinder body(12) forming a long half cylinder body shape; a pair of first flange(14) forming a plurality of first penetration holes(14a) protruding in both sides of first half cylinder body; a first semicircular shape waterproof sill forming perpendicularly against the first half cylinder body; a second screw part(22a) in one side circumference surface; a second half cylinder body(22) forming a long half cylinder body shape; a pair of second flange(24) forming a plurality of second penetration holes(24a) protruding in both sides of second half cylinder body; a second semicircular shape waterproof sill(26) forming perpendicularly against the second half cylinder body; a first packing member(30) preventing a penetration of a moisture in outside; and a coupling member formed into the cylindrical body uniting the first and the second half cylinder body.
Patent KR-20080102581-A (KR)
Title: Bioelectrical impedance analysis apparatus
Inventor: CHA KI CHUL
IPC: A61B5/04
Filed: 2007-05-21
Abstract: A bioelectrical impedance measuring apparatus including an inter-digital electrode, a measuring unit, a display unit, and a controller is provided to reduce manufacturing cost by simplifying an apparatus structure. A bioelectrical impedance measuring apparatus comprises the followings: a display unit(120) for indicating a bioelectrical impedance measurement result; a inter-digital electrode(130) contacted with two legs of a test person; a impedance measuring unit measuring a bioelectrical impedance of the test person; a controller indicating the bioelectrical impedance measurement result through the display unit; and electrodes arranging the inter-digital electrode having a separated form from each other. The electrodes comprises an electrode(131) for current application and an electrode for voltage measuring(132).
Patent KR-20080110113-A (KR)
Title: Broadcasting method to reduce network fragmentation in vehicle ad-hoc network
Inventor: HONG WON KEE
IPC: G08G1/0965
Filed: 2007-06-14
Abstract: A broadcasting method for reducing a network disconnection in ad hoc network between vehicles is provided to reduce network disconnection which is frequently generated in ad hoc network between vehicles and transmit an emergency message stably even if the density of vehicle is high or low. If accident is generated while driving(S1), it determines whether to be a connection mode in a source node(S2). An emergency message is transmitted from the source node in a connection mode(S3). The node receiving the emergency message set up a waiting time for broadcasting according to distance(S4). The nodes in which the latency time for the broadcasting is expired retransmits the emergency message(S5). The nodes which are re-received with the emergency message before the latency time is expired is selected as the relaying node(S6).
Patent KR-20070120049-A (KR)
Title: Method for polymerizing cyclic olefin having polar functional group, olefin polymer produced thereby, and optical antisotropic film comprising the same
Inventor: CHOI DAI SEUNG
IPC: C08G85/00
Filed: 2007-06-15
Abstract: A method for preparing cyclic olefin polymers having a polar functional group is provided to prevent inactivation of a catalyst caused by a polar functional group, moisture, and oxygen, and produce the cyclic olefin polymers having high molecular weight in high yield. A method for preparing cyclic olefin polymers having a polar functional group includes a step of bringing a catalyst mixture into contact with a monomer solution comprising a cyclic olefinic monomer having a polar functional group. The catalyst mixture comprises a group 10 metal-containing pre-catalyst represented by the following formula 1, an organic phosphorous-based ligand represented by the following formula 2, and a cocatalyst which is represented by the following formula 3 and is a salt compound capable of providing an anion to be weakly coordinated to the group 10 metal.
Patent KR-20080074008-A (KR)
Title: Behavior learning method and apparatus in software robot
Inventor: LEE KANG HEE
IPC: G06F9/44
Filed: 2007-06-21
Abstract: A method and a device for training behavior of a software robot are provided to train correlation between behavior and an internal status of the software robot, perform training between all behaviors and internal statuses permitted in the software robot, and enable the software robot to recognize all input recognizable to the software robot as reward and penalty even if a user does not give the reward and the penalty in feedback. A behavior performer(50) realizes behavior of a software robot. An episode memory(60) searches an episode corresponding to a type of the realized behavior, and the type of an object and a status recognized in virtual space among a plurality of episodes storing variance related to each status, and calculates a representative variance by using the variance stored in response to the searched episode and the variance generated in response to the realized behavior. The episode memory stores the calculated representative variance as the variance of the searched episode. A perception unit(20) manages the results that a software robot perceives the environment information of virtual space and the physical state of a body.
Patent KR-20090002266-A (KR)
Title: Proxy driving service system and method thereof
Inventor: RYU HOON JOO
IPC: G06Q50/30
Filed: 2007-06-25
Abstract: A rent-a-drive call service system and method are provided to assign a driver who provides high quality service to a customer who frequently uses a rent-a-drive service so as to improve customer management efficiency. A rent-a-drive call service system(100) includes a database(120) in which drivers are registered by grades and customer grade data, and a rent-a-drive call service server(110) which determines whether a customer is registered in the database through the telephone number of a communication terminal of the customer when a rent-a-drive request is received the communication terminal and assigns a driver in a grade corresponding to the grade of the customer when the customer is registered in the database. The driver is in a waiting state and located in the shortest distance from the customer.
Patent KR-20090001133-A (KR)
Title: Apparatus and method for fabricating semiconductor device
Inventor: KWAK DO YONG
IPC: H01L21/027
Filed: 2007-06-29
Abstract: A manufacturing device and a method of the semiconductor device are provided to resolve the interference problem by the flow of the fluid by applying the Peltier element to the wafer chuck used in the exposure process. A photosensitive film is formed on the top part of the wafer. The wafer is loaded on the wafer chuck(100) including the Peltier element. An exposure process is performed onto the top part of the wafer. The exposure process is the emulsion lithographic process. The wafer chuck is cooled down or heated by using the Peltier element(120) in the exposure process. The temperature of the wafer chuck is controlled between 21°C or 23°C.
Patent KR-20090007125-A (KR)
Title: Method to fabricate solar cell by using a porous silicon
Inventor: YI JUN SIN
IPC: H01L31/04
Filed: 2007-07-13
Abstract: A solar cell manufacturing method using porous silicon is provided to perform high level doping in a solar cell electrode area and perform low level doping in a part with no electrode, thereby reducing contact resistance between the electrode and silicon and increasing photoelectric conversion efficiency. A substrate(30) is washed. A porous silicon layer(32) is generated on the substrate. The porous silicon of a metal electrode domain(a,b) of the whole surface part of the substrate in which the porous silicon is generated is partly removed. High level doping is performed in the whole surface part of the substrate. The porous silicon layer remaining in the whole surface part of the substrate after the doping treatment step is removed. In the metal electrode domain(a,b), high level doped layers(51,52) are produced. In a part which is not the electrode area(a,b), low level doped layers(41,42,43) are produced. A reflection barrier layer(60) is generated in the whole surface part of the substrate. An electric field layer(P+ layer)(20) and a back electrode(10) are formed in the back of the substrate. Front electrodes(51,52) are formed in the front of the substrate.