baber/WOPTO huggingface dataset:
Patent KR-20160116217-A (KR)
Inventor: YOON CHANG SEOP
IPC: H01L29/78
Filed: 2015-03-27
Abstract: A semiconductor device comprises: a first device separation film defining activation regions on a substrate separated from each other in a first direction; second device separation films which are extended in the first direction, are arranged in a second direction crossing the first direction, are connected to the first device separation film, and define a plurality of activation patterns protruding from the substrate in the activation regions; and a gate structure extended in the second direction, and provided on the first device separation film between the activation regions. The height of the upper surface of the second device separation film is lower than the height of upper surfaces of the activation patterns. The height of the upper surface of the first device separation film is higher than the height of the upper surfaces of the activation patterns. The height of at least a portion of the lower surface of the gate structure is higher than the height of the upper surfaces of the activation patterns.
Patent KR-20160115444-A (KR)
Inventor: KIM BYONG KUK
IPC: B63H21/17
Filed: 2015-03-27
Abstract: The purpose of the present invention is to provide a propulsion device for a marine vessel with a compact size and an improved waterproof. The present invention provides the propulsion device for a marine vessel includes a stator including a stator core cylindrically joined and having multiple slot units radially arranged in an axial direction and a coil wound around the slot unit; a waterproof frame compartmentalizing an outer surface of the stator watertight from an external space and made of a non-magnetic material; and a rotor frame on which multiple permanent magnets with different polarity are alternately arranged to face an axial outer cross sectional surface of the slot unit in the axial direction, arranged in an outer side of the waterproof frame, and having a propeller protruding from an outer circumference thereof.
Patent KR-20160116636-A (KR)
Inventor: JIN BYUNG WOOK
IPC: G06Q30/06
Filed: 2015-03-31
Abstract: 본 발명은 아이디어 권리화 온라인 서비스방법에 관한 것으로서, 복잡한 특허출원 등의 절차에 익숙하지 사람이라도 온라인 사이트를 통해 자신의 아이디어를 신청하면 기 설정된 특정인 명의로 출원되므로, 기술이전 등을 목적으로 자신의 아이디어를 공개하더라도 선출원의 지위를 확보할 수 있어, 제3자의 무단 도용 출원에 따른 피해를 방지할 수 있으며, 사이트 상에서 출원된 기술을 특정인을 통해 손쉽게 거래할 수 있는 아이디어 권리화 온라인 서비스방법에 관한 것이다. 
본 발명에 따르면, 복잡한 출원절차에 익숙하지 않은 사람이 온라인 사이트를 통해 자신의 아이디어를 신청하면 기 설정된 특정인 명의로 출원이 되어 보다 손쉽게 자신의 아이디어에 대한 선출원 지위를 얻을 수 있고, 나아가 온라인 사이트를 통해 상기 특정인이 기술이전에 따른 절차를 대행할 수 있어 간편하게 아이디어를 거래할 수 있다는 효과가 있다.
Patent KR-20160116793-A (KR)
Title: Method for selecting operating channel considering intermodulation distortion in unlicensed band
Inventor: JUNG HOI YOON
IPC: H04W72/02
Filed: 2015-03-31
Abstract: The embodiment of the present invention relates to a method for selecting an operating channel considering intermodulation distortion in an unlicensed band. A method for selecting the unlicensed band operating channel of a wireless communication device which uses a licensed band and a unlicensed band at the same time, may include a step of measuring quality for each channel in an unlicensed band; a step of calculating intermodulation distortion according to carrier aggregation and licensed band for each channel in the unlicensed band or measuring; and a step of applying the intermodulation distortion and determining an operation channel in the unlicensed channel. So, system performance improvement can be maximized.
Patent KR-20160042746-A (KR)
Inventor: ARENA ANTHONY
IPC: H01M10/04
Filed: 2015-04-02
Abstract: Provided is a battery cell assembly including a first frame member and a second frame member. The first frame member has a first rectangular ring-shaped main body and a first connection unit. The first connection unit has a first tab member and a first metallic trim clip member connected to the first tab member. The second frame member has a second rectangular ring-shaped main body and a second connection unit. The second connection unit has substantially flat first and second planar walls, a first outer peripheral wall portion, and a second outer peripheral wall portion setting an internal area. The second planar wall has an opening extending through the second planar wall. The first metallic trim clip member is positioned in the internal area of the second connection unit through an opening and is coupled with an inner surface of the second planar wall such that the second frame member can be coupled with the first frame member.
Patent KR-20160119972-A (KR)
Inventor: IM JONG YOON
IPC: G06F19/00
Filed: 2015-04-07
Abstract: A system for recording a process of transferring an emergency patient according to the embodiment of the present invention may include a path guide part (10) which searches a transfer path from the boarding point of an emergency patient to an adjacent hospital; and an emergency treatment recording part (20) which records medical practices for the emergency patient of an emergency medical team according to the transfer path set by the path guide part (10). According to a system for recording process of transferring an emergency patient and a method thereof according to the embodiment of the present invention, a medical practice situation for the emergency patient of the emergency medical team according to the transfer path along which an emergency car moves to a hospital, is recoded or can be recorded.
Patent KR-20160121970-A (KR)
Inventor: KANG CHI JUNG
IPC: C12N15/87
Filed: 2015-04-13
Abstract: The present invention relates to a manufacturing method of a probe for cell electroporation and a holder for manufacturing a probe, which is a holder for coating a nanoparticle on a SPM probe in a selective manner. Provided is the probe holder, which comprises: a cantilever holding unit for holding the upper side of cantilever and a probe tip of the SPM probe; a supporting rod holding unit for holding the upper side of the supporting rod of the SPM probe; and a holder arm connected to one side of the supporting rod holding unit for changing the position of the SPM probe from a dispersion solution in which the nanoparticle is dispersed.
Patent KR-20160127269-A (KR)
Inventor: SEO JAE MIN
IPC: G08B25/14
Filed: 2015-04-24
Abstract: 위험물질의 속성에 따라서 발생할 수 있는 다양한 2차사고를 정확하게 방지 및 대응할 수 있는 기술을 제공한다. 본 발명의 일 실시예에 따른 위험물질 수송차량의 사고 관리 서버는, 외부의 통신 수단으로부터 위험물질 수송차량의 사고신고가 등록됨을 감지하고, 사고신고의 등록 시, 사고가 발생한 위치 정보, 수송차량의 식별 정보 및 수송차량에 탑재된 물질의 속성에 관한 정보인 위험물 정보를 등록된 사고신고에 관한 정보, 등록된 관리 대상 수송차량 정보 및 복수의 위험물 정보가 저장되는 데이터베이스부터 추출하는 사고정보 추출부; 위험물 정보를 기반으로, 사고가 발생한 위치에서 위험물로 인하여 발생 가능한 추가 사고 예측 정보를 생성하는 2차사고 예측부; 및 생성된 추가 사고 예측 정보 및 위험물 정보를 사고의 처리 및 대응을 수행하는 대응 기관의 대응 차량에 탑재된 단말에 전송하는 사고정보 전송부;를 포함하는 것을 특징으로 한다.
Patent KR-20160129271-A (KR)
Inventor: CHA MOO HYUN
IPC: A63B22/02
Filed: 2015-04-30
Abstract: 본 발명은 측면 옴니휠을 이용한 2차원 트레드밀에 관한 것으로서, 더욱 상세하게는 트레드부를 X축 방향과 Y축 방향으로 순환시키며, 순환되는 속도 제어를 통해 전 방향으로의 이동이 가능한 2차원 트레드밀을 형성하되, 상기 트레드부를 Y축 방향으로 순환시키는 Y축구동부를 다수의 옴니휠로 형성하고, 상기 트레드부의 트레드 외측면과 면접하도록 하여 Y축 방향으로의 순환을 위한 동력을 전달하는 측면 옴니휠을 이용한 2차원 트레드밀에 관한 것이다.
Patent KR-20160133607-A (KR)
Title: Display device
Inventor: CHOI JAE HO
IPC: G02F1/1362
Filed: 2015-05-12
Abstract: A display device according to an embodiment of the present invention includes a first substrate, a gate line and a data lien arranged on the first substrate, a first protective film disposed on the gate line and the data line and having a first contact hole, a second protective film disposed on the first protective film and having a second contact hole, a common electrode disposed on the second protective film and a residual pattern of the common electrode disposed on a drain electrode; a third protective film disposed on the common electrode and having a third contact hole; and a pixel electrode disposed on the third protective film and connected to the drain electrode, wherein a recess is formed between the first protective film and the second protective film, and the common electrode and the residual pattern of the common electrode are disconnected.
Patent KR-20160134350-A (KR)
Inventor: KIM YUN SIK
IPC: G06T1/60
Filed: 2015-05-15
Abstract: 본 발명은 고해상도 영상의 고속필터처리 방법에 관한 것으로, 보다 상세하게는 필터알고리즘(10)을 실행하는 CPU의 코어 수를 확인하여  확인된 코어 수를 기준으로 영상데이터(I)를 세로로 분할하여 분할영상데이터(In)를 생성하며, 생성된 상기 분할영상데이터(In)를 동시에 병렬처리하는 필터알고리즘(10)으로 마스크하여 결과영상데이터(N)를 생성하고, 상기 결과영상데이터(N)를 정합하여 필터링된 필터영상데이터(P)를 생성함으로써, 고해상도의 영상데이터의 실시간으로 필터처리하는 고해상도 영상의 고속필터처리 방법에 관한 것이다.
Patent KR-20160136112-A (KR)
Inventor: KIM CHUNG HWAN
IPC: H03L7/07
Filed: 2015-05-19
Abstract: 본 발명의 PLL 회로는, 기준 주파수 신호 및 제1 전압 제어 발진기의 출력인 제1 주파수 신호를 입력받고, 상기 제1 전압 제어 발진기를 제어하는 제1 제어 전압을 출력하는 제1 PLL 유닛; 및 상기 기준 주파수 신호 및 제2 전압 제어 발진기의 출력인 제2 주파수 신호를 입력받고, 상기 제2 전압 제어 발진기를 제어하는 제2 제어 전압을 출력하는 제2 PLL 유닛을 포함한다.
Patent KR-20150065631-A (KR)
Inventor: PAKR SUNG CHEUL
IPC: F25D27/00
Filed: 2015-05-21
Abstract: The present invention relates to a refrigerator with a dispenser installed in a door thereof, and more specifically to a switch module for operating a dispenser more stably and a refrigerator having the same. A switch module to operate a dispenser comprises a switch to operate the dispenser; a push button moving backward by receiving an external force to operate; and a switch case which accommodates the switch inside and has the push button on the front part. The push button is installed in a switch case through a link assembly which moves both the upper part and the lower part of the push button forward and backward, thereby stably operating regardless of the location to which the external force is applied.
Patent KR-20160136995-A (KR)
Inventor: RYOO JEONG WOOK
IPC: G06Q20/40
Filed: 2015-05-22
Abstract: The present invention relates to a method for payment based on a user terminal, which can perform payment for a product or service based on a user terminal capable of performing wireless communication. More specifically, according to the present invention, the method for payment based on a user terminal enables a series of payment steps, such as generation of order information, authentication, and a request for payment approval, to be performed by using a user terminal without requiring a separate affiliated Point of Sale (POS) terminal. Accordingly, a user can skip procedures of transmitting and receiving payment information, authentication information, and the like to and from a POS terminal via data communication when purchasing a product or service.
Patent KR-20160137913-A (KR)
Title: A pressure sensing device using a touch screen panel operation
Inventor: LEE JIN KUG
IPC: G06F3/041
Filed: 2015-05-23
Abstract: The present invention relates to a pressure sensing device using a touch screen panel operation. The pressure sensing device (100) using touch screen panel (TSP) operation includes: a touch sensor (113) forming a channel; a capacitance change formation unit (114) disposed in the upper portion of the touch sensor (113); a pressure sensor (116) disposed in the upper portion of the capacitance change formation unit (114); a TSP touch unit (110) having a cover window (117) and disposed in the upper portion of the pressure sensor (116); and a TSP controller (120) including a touch controller IC (125) and a pressure controller IC (127).
Patent KR-20160139202-A (KR)
Inventor: CHOI DAE KYU
IPC: H04L12/721
Filed: 2015-05-27
Abstract: The present invention relates to a technology for a sensor network, a machine to machine (M2M) communication, a machine type communication (MTC), and internet of things (IoT). The present invention is usable for a smart service based on the technology (smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety related service, and so on). According to the present invention, the method of transmitting a signal by a node in a mesh network supporting a flooding scheme includes the steps of: transmitting a packet; after the packet is transmitted, receiving at least one packet transmitted from at least one peripheral node except for the node; determining whether the at least one peripheral node normally receives the packet on the basis of the at least one packet; and re-transmitting the packet when determining the packet needs to be re-transmitted on the basis of a result of the determination.
Patent KR-20160141346-A (KR)
Inventor: YOON SANG PIL
IPC: G09G3/36
Filed: 2015-05-31
Abstract: The present invention relates to a gate driver which can prevent error in an operation of outputting a gate drive signal from occurring in a gate driver using a Gate In Panel (GIP) method. According to an embodiment of the present invention, a gate driver of a display device comprises: a plurality of stages which sequentially supply gate drive signals to a plurality of gate lines formed in a display panel. In this case, each of the stages includes a pull-up Thin Film Transistor (TFT) adapted to output a high voltage, stored in a Q node, to a gate line, an odd pull-down TFT adapted to be turned on in response to a voltage of an odd QB node and to discharge a voltage of the gate line to a ground, an even pull-down TFT adapted to be turned on in response to a voltage of an odd QB node and to discharge the voltage of the gate line to a ground, and a first stabilizer adapted to operate in response to an n-1 clock signal and to discharge a voltage, stored in the Q node, to a ground.
Patent KR-20150146399-A (KR)
Inventor: HONDA HIROKAZU
IPC: H01L23/40
Filed: 2015-06-11
Abstract: A purpose of the present invention is to perform a semiconductor package having an excellent heat radiation characteristic, and high reliability. The semiconductor package includes: a support substrate; a semiconductor device bonded via an adhesive to a surface of the support substrate; an insulating layer for covering the semiconductor device; and a wiring for connecting the semiconductor device and an external terminal by penetrating the insulating layer. A first aperture for reaching the semiconductor device is provided in a rear surface side of the support substrate. The adhesive may form a part of the first aperture.
Patent KR-20160146399-A (KR)
Title: 휴대용 케이스
Inventor: LEE HA NA
IPC: B65D81/02
Filed: 2015-06-12
Abstract: 본 발명은 내부에 수납공간을 구비하는 케이스 바디 및 수납 물품을 압박하여 고정시킬 수 있도록 상기 케이스 바디 내면에 탈착되는 고정부재를 포함하는 휴대용 케이스를 제공한다.  
이러한 본 발명에 의하면, 케이스 내부에 장착되는 고정부재에 의해 케이스가 흔들리는 경우에도 보관 물품이 케이스에 부딪치거나 흔들리지 않아 수납된 물품을 보호하고 케이스 내부가 지저분해지는 것을 방지할 수 있다. 또한, 고정부재는 물품을 압박하는 절곡부를 포함하여 물품의 개구부를 밀폐할 수 있으므로 화장품 샘플 등이 남았을 경우 샘플이 새어 나오지 않게 케이스 내부에 수납하는 것이 가능하다. 아울러, 고정부재는 일단에 걸림홈을 구비하여 면봉과 같이 가늘고 긴 물체를 고정시킬 수 있으므로 케이스 내부 수납 공간을 보다 효율적으로 활용할 수 있다.
Patent KR-20160148277-A (KR)
Title: Lamp for vehicle
Inventor: PARK SUN KYOUNG
IPC: F21W107/10
Filed: 2015-06-16
Abstract: The present invention relates to a lamp for a vehicle and, more specifically, relates to a lamp for a vehicle, capable of controlling light intensity heading towards a direction not desired through a simple composition. According to an embodiment of the present invention, the lamp for the vehicle comprises: a light source unit in which light is generated; and a lens unit including a lens having an incident unit in which light generated in the light source unit is incident, and an emitting unit which the incident light is emitted. The incident unit comprises a first incident surface, and a second incident surface formed to be inclined at a predetermined angle from at least a portion of an external end of the first incident surface to a rear.
Patent KR-20160000437-A (KR)
Inventor: CHOI DAE KYU
IPC: F21S10/02
Filed: 2015-06-23
Abstract: The present disclosure relates to technologies for a sensor network, machine-to-machine (M2M) communication, machine type communication (MTC), and internet of things (IoT). The present disclosure can be applied to intelligent services (smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety services, etc.) based on the above technologies. The present invention relates to pairing between an electronic device and a lighting device. A method of an electronic device for pairing with a lighting device comprises the steps of: photographing a lighting device to be paired; acquiring identification data of the lighting device from the photographed image; and pairing with the lighting device by transmitting the identification data to the lighting device. A method of a lighting device for pairing with an electronic device comprises the steps of: outputting light based on identification data of a lighting device; receiving identification data from an electronic device; determining whether to pair with the electronic device by comparing the identification data of the lighting device with the received identification data; and pairing with the electronic device when the pairing with the electronic device is determined.
Patent KR-20170003287-A (KR)
Title: 세라믹 회로 기판의 제조방법
Inventor: KIM MIN SOO
IPC: H05K3/38
Filed: 2015-06-30
Abstract: 본 발명은 세라믹 회로 기판의 제조방법에 관한 것으로서, 더욱 상세하게는 인쇄를 통해서 회로 패턴을 형성하는 세라믹 회로 기판의 제조방법에 관한 것이다.  본 발명에 따른 세라믹 회로 기판의 제조방법은 a) 세라믹 기판에 티타늄(Ti) 박막 층을 형성하는 단계와, b) 상기 티타늄(Ti) 박막 층 위에 구리(Cu) 박막 층을 형성하는 단계와, c) 상기 구리(Cu) 박막 층 위에 구리(Cu) 페이스트를 이용하여 구리(Cu) 패턴을 인쇄한 후 건조하는 단계를 한 번 이상 진행하여 구리(Cu) 패턴 층을 형성하는 단계와, d) 상기 구리(Cu) 패턴 층을 소결하는 단계와, e) 상기 구리(Cu) 패턴 층이 형성되지 않은 부분의 구리(Cu) 박막 층을 제거하는 단계와, f) 상기 구리(Cu) 패턴 층이 형성되지 않은 부분의 티타늄(Ti) 박막 층을 제거하는 단계를 포함한다.  본 발명에 따른 세라믹 회로 기판의 제조방법에 따르면 금속 패턴과 세라믹 기판 사이의 결합력이 우수한 세라믹 회로 기판을 용이하게 제조할 수 있다.
Patent KR-20170006336-A (KR)
Title: Organic light emitting diode, manufacturing method for the same, and organic light emitting display device having the organic light emitting diode
Inventor: LEE JOON GU
IPC: H01L27/32
Filed: 2015-07-07
Abstract: The present invention relates to an organic light emitting diode which includes a substrate, a first electrode which is located on the substrate and includes a transparent protection layer and a conductive layer which are successively laminated, a hole moving layer which is located on the surface of the transparent protection layer, an organic light emitting layer which is located on the hole moving layer and emits light of a specific color, a common layer which is located on the organic light emitting layer, and a second electrode which is located on the common layer. Accordingly, the present invention can reduce manufacturing costs and simplify manufacturing processes.
Patent KR-20170006890-A (KR)
Inventor: GONG SUK TAE
IPC: B29C70/30
Filed: 2015-07-10
Abstract: 본 발명은 열경화성 수지의 FRP, 예를 들어, 멜라민 수지 FRP를 파이프 형상으로 제조하기 위하여 필요한 가압과 가열을 동시에 하여 열경화함으로써, 원통형의 파이프로 제조할 수 있는 열경화성 수지 FRP 파이프 제조 장치에 관한 기술을 제공한다.
Patent KR-20170008054-A (KR)
Title: Waste heat recovery system
Inventor: SEO JUNG MIN
IPC: F25B33/00
Filed: 2015-07-13
Abstract: The present invention relates to a waste heat recovery system, using a boiler by properly varying the boilers (an exhaust gas boiler and an EGR gas boiler) which are a heat source of waste heat recovery in accordance with various operation conditions and external factors in order to significantly improve waste heat recovery efficiency. The present invention relates to the waste heat recovery system, having a rankine cycle where the boiler, an inflator, a condenser, and a circulation pump are installed on a circulation path where work fluid circulates. The waste heat recovery system comprises: the boilers connected to the circulation path of the rankine cycle through a connection pipe between the inflator and the circulation pump; and first and second direction control valves installed in an upstream side and a downstream side of the boilers to switch the flow direction of the work fluid with respect to two or more boilers.
Patent KR-20170009272-A (KR)
Inventor: SON HUNG SUN
IPC: B64C27/32
Filed: 2015-07-16
Abstract: The present invention relates to a small flying object capable of aerial photographing, comprising: a main body; a plurality of propeller units which are arranged in the circumferential direction of the main body by being spaced apart from each other, are operated by a control unit receiving an operation signal transmitted from a user and generate a propelling force by rotation to allow the main body to fly; and a driving unit installed in the main body, and connected to the propeller units to reciprocally slide the propeller units simultaneously so that a spacing between a rotary shaft and a rotary shaft of each of the propeller units facing each other is maintained at a predetermined maximum spacing or a predetermined minimum spacing.
Patent KR-20170010509-A (KR)
Inventor: JO YOUNG AN
IPC: A01K73/053
Filed: 2015-07-20
Abstract: The present invention rope arranging device for gathering and arranging, in a predetermined place, a fishing line collected by an operator or a lifter in a trap fishing boat for fishing usually blue crabs and small octopuses. Electrical power of a motor (110) is transferred to a main roller (130) and a tension roller (140) through a clutch installed in a case (120), so the speeds of the main roller (130) and the tension roller (140) are changed according to the lifting speed of a fishing line (6) gathered by an operator or a lifter. The rear end of a horizontal connecting rod (150) is connected with a support (125) of the case (120), and a vertical rod (160) is coupled with a connection coupling unit (155) disposed at the front end of the horizontal connecting rod (150). The top end of the vertical rod (160) and the top end of a vertical rod (172) of a guide ring (170) are connected by a top connecting piece (165), and thus the vertical rod (160) and the vertical rod (172) of the guide ring (170) are horizontally disposed. A bending ring unit (174) refracted at the bottom end of the vertical rod (172) is disposed at the front of the main roller (130), and thus the fishing line (6) is supplied to the main roller (130) through the bending ring unit (174).
Patent KR-20170011119-A (KR)
Inventor: NAM YOON HYE
IPC: A61F13/00
Filed: 2015-07-21
Abstract: 본 발명의 일 실시예에 따르면, 두께를 가진 본체(13), 본체(13)의 상부에 부착되며, 수분 통과를 방지할 수 있는 투명한 재질의 시트(11)를 포함하며, 본체(13)에는 개구부가 형성되어 있고, 시트(11)는 개구부를 덮도록 부착되어 있으며, 본체(13)의 하부의 적어도 일부는 접착성 재질로 이루어진 것인, 상처보호용 방수시트가 개시된다.  
이로써, 환자들의 상처나 수술로 인한 외상부위를 완전히 가려주어 물과 세균의 침투를 막아 이에 의한 감염이나 손상을 방지할 수 있다. 또한, 실리콘 소재가 직접 피부에 부착됨으로써 접착력은 강화되고 탈착시 자극이 적으며, 접착제로 폴리올레핀 겔을 사용함으로써, 탈착시 피부에 전혀 들러붙지 않을 수 있고, 신체의 굴곡진 부위에 적용할 경우에도 쉽게 떨어지지 않으며, 재사용이 가능하다.
Patent KR-20170011358-A (KR)
Inventor: HWANG EUI YON
IPC: H01M10/052
Filed: 2015-07-22
Abstract: The present invention relates to a lithium metal foil, a method for manufacturing the same, and a method for removing a film of the same. The lithium metal foil according to the present invention comprises: a lithium metal plate or support-attached lithium metal plate; an oil film which is formed on a surface of the lithium metal plate or support-attached lithium metal plate; a protective film which is attached to the oil film; and a paraffin-polymer blending film or general polymer blending film which is compressively attached to the protective film. The method for manufacturing lithium metal foil comprises the steps of: forming an oil film on at least one surface of a lithium metal plate or support-attached lithium metal plate; and attaching a protective film onto the oil film. The method for removing a film of lithium metal foil comprises the steps of: separating a protective film; and removing an oil film remaining on a lithium metal plate after the protective film has been separated. The lithium metal foil, the method for manufacturing the same, and the method for removing a film of the same according to the present invention may be used for a lithium battery in which a lithium metal is sealed from moisture, and thus properties and quality of the lithium metal can be stably maintained. Furthermore, provided are effects in which a separate adhesive is not required, a film and oil can be easily removed, and a lithium battery can be easily manufactured.