baber/WOPTO huggingface dataset:
Patent KR-20000055551-A (KR)
Inventor: CHOI JONG EON
IPC: H01J29/10
Filed: 1999-02-08
Abstract: PURPOSE: A selectively displaying apparatus of a color cathode ray tube is provided to prevent an incomplete color from displaying on an outmost portion of a screen, thereby improving a quality of the screen. CONSTITUTION: A selective indicating apparatus of a color cathode ray tube comprises a red, green and blue fluorescent material(1R',1G',1B') for displaying a color image in a panel, a fluorescent film(1) which has a black matrix(10) for absorbing light from the outside, and a shadow mask which is apart from the fluorescent film at a distance and functions to select a color. In the apparatus, the fluorescent material at an outmost portion of an effective surface has a larger surface than other fluorescent material adjacent to the fluorescent material. Since a luminescence of the fluorescent material is proportioned to a surface thereof, if the surface of the fluorescent material is reduced, the luminescent surface is also reduced.
Patent KR-19990072680-A (KR)
Title: 통합무선통신및랜시스템
IPC: H04W88/16
Filed: 1999-02-13
Abstract: 본 발명은 무선 LAN 및 이동 통신 시스템을 통합하는 방법과 장치 및 네트워크 시스템을 포함한다.  네트워크 대용 및 단말기 대용이 제공되어 단말기가 네트워크와 접속될 수 있으며 다수의 접속 인터페이스중 어느 하나를 이용할 수 있다.  네트워크 대용 및 단말기 대용은 인터페이스간의 스위칭을 허용하며, 통신 프로토콜의 보다 높은 층으로부터 상기 스위칭을 숨긴다.  스위칭은 링크층에서 관리된다.
Patent KR-20000056616-A (KR)
Inventor: JUNG JONG JAE
IPC: A61K8/41
Filed: 1999-02-24
Abstract: PURPOSE: A preparation method of two-preparation hair dye and its composition are provided, to improve the convenience of a user. CONSTITUTION: A first preparation composition of the two-preparation hair dye comprises 100 vol% of the composition consisting of 8-12 wt% of oleic acid; 12-18 wt% of polyoxyethylene monooleate; 6-10 wt% of monoethanolamine; 2.0-5.0 wt% of liquid ammonia; 12-18 wt% of ethanol; 1.92 wt% of p-phenylenediamine; 2.3 wt% of o-aminophenol; 0.65 wt% of resorcin; 1.0 wt% of quternium-52; 0.05 wt% of hydroxy ethylcellulose; and the balance of deionized water, and 6-14 vol% of a gas. The second preparation composition of the tow-preparation hair dye comprises 100 vol% of the composition consisting of 12-18 wt% of hydrogen peroxide; 0.30 wt% of citric acid; 0.2 wt% of phosphoric acid; 0.26 wt% of anhydrous sodium dihydrogen phosphate; 1.0-2.0 wt% of nonylphenyl ether; 0.2 wt% of hydroxy ethylcellulose; and the balance of deionized water, and 6-14 vol% of a gas. The gas is LPG, nitrogen or dimethyl ether.
Patent KR-20000034805-A (KR)
Inventor: KASEZAWA MINORU
IPC: F25B1/00
Filed: 1999-03-02
Abstract: PURPOSE: A refrigerating machine is provided which uses an HFC based refrigerant in which performance and coefficient of performance are enhanced by increasing the refrigerating power while stabilizing operation. CONSTITUTION: A refrigerating machine having a refrigeration cycle comprises a compressor(1), a condenser(2), an expansion valve(5), and evaporator(4) coupled sequentially is provided with an HFC based refrigerant and a super cooler(3) disposed between the condenser(2) and the evaporator(4). Liquid HFC based refrigerant from the condenser(2) is branched into a main flow liquid and the other liquid which supercools the main flow liquid through a super cooling expansion valve(7) before being introduced to the intermediate section of the compressor(1).
Patent KR-20000059843-A (KR)
Inventor: KANG MIN GYU
IPC: H01L21/033
Filed: 1999-03-09
Abstract: PURPOSE: A mask ROM of a semiconductor device and fabricating method thereof is to restrain an auto doping of a buried impurity diffusing area, thereby reducing a space between the impurity diffusing areas to a minimum and securing a punch through margin. CONSTITUTION: A mask ROM of a semiconductor device comprises a buried impurity diffusing area(72) formed around a surface of a semiconductor substrate(70), a buried insulating layer(76) formed on the buried impurity diffusing area, a pad conductive layer(78) formed between the buried impurity diffusing areas on the semiconductor substrate to be apart from each other at an interval and arranged in one direction, and a word line(80) for covering the pad conductive layer to be orthogonal to the buried impurity diffusing areas. A method for fabricating the mask ROM comprises steps of forming a gate insulating layer on the semiconductor substrate, forming a conductive pattern on the gate insulating layer in one direction, performing an ion implanting process using the conductive layer pattern as a mask to form the buried impurity diffusing area between the conductive layer patterns, burying a space between the conductive layer patterns with an insulating material to form the buried insulating layer, forming a conductive layer for the ward line and then forming a pad conductive layer at an overlapped area of the semiconductor substrate and the ward line.
Patent KR-20000059897-A (KR)
Inventor: LEE JEONG EUM
IPC: F04B17/04
Filed: 1999-03-09
Abstract: PURPOSE: A linear compressor mounted with two pistons is provided to increase the compression efficiency by performing a compression stroke of two times with one time stroke of two integrally formed pistons. CONSTITUTION: A linear compressor mounted with two pistons includes a main body, a cylindrical outer stator(310) mounted in the main body and winded with coil(312) at a predetermined position, a cylindrical inner stator(315) mounted apart from an inner peripheral surface of the outer stator with a predetermined distance for forming an air gap with the outer stator, a cylinder integrally coupled with an inner peripheral surface of the inner stator and formed with first and second cylindrical parts toward a central part from top and bottom surfaces, and a piston assembly(360) having a first piston(320) at an upper part for sliding in the first cylindrical part, a second piston(340) at a lower part for sliding in the second cylindrical part, and a connection element(325) connecting the first and second pistons and integrally formed with a permanent magnet(330) at a predetermined position for vertically reciprocating due to an electromagnetic interaction with the coil of the outer stator.
Patent KR-20000060252-A (KR)
Inventor: CHO SE HYEON
IPC: B65D88/00
Filed: 1999-03-12
Abstract: PURPOSE: A container door structure is provided to achieve an improved quality of the door structure and lengthen the useful life of the door structure while increasing the adhesive force of a gasket. CONSTITUTION: A container door structure(10) comprises a honeycomb core structure, a reinforcing frame(14) arranged at all edges of the honeycomb core structure, the reinforcing frame having inclined planes connected to each other so as to form an edge portion of the door structure, a sectional surface forming a square C-shaped groove and a tooth coupling surface, inner and outer skins attached to the honeycomb core structure and the reinforcing frame through an adhesive sheet so as to form a surface of the door structure, and a synthetic resin gasket having a square C-shaped connection sectional surface protruded in correspondence to the sectional surface of the reinforcing frame, the gasket having a tooth coupling surface and being resiliently fixed to the door structure through the groove of the reinforcing frame.
Patent KR-19990077871-A (KR)
Title: Ｄｖｄ 드라이브용 듀얼 방식 자동 균형기
IPC: F16F15/36
Filed: 1999-03-15
Abstract: 본 발명의 DVD 디스크, 또는 CD-ROM 디스크를 포함하는 여러 가지 광학 매체용 (DVD) 드라이브 유닛은 정선속도(constant linear velocity; CLV) 또는 정각속도(constant angular velocity; CAV)의 어느 쪽이든 광학매체를 회전시키고 판독하는 동안에 진동을 제거할 수 있다.  CAV 방식에서, 드라이브 유닛은 균형이 잡히지 않은 디스크의 균형을 맞추기 위하여 턴테이블의 공동(cavity)에서 이동가능한 볼베어링을 사용한다.  CLV 방식에서, 드라이브 유닛은 턴테이블의 둘레의 공동에서 볼베어링을 캡쳐하고 대칭으로 배열하기 위하여 일련의 전자석을 이용한다.
Patent KR-20000073805-A (KR)
Inventor: KIM JA MYEONG
IPC: H04L12/28
Filed: 1999-05-14
Abstract: PURPOSE: A switching method when errors occur on a network of a mobile communication system is provided to suspend a connection of a wrong path when a network path is connected with other computer, and to perform a re-connection of a normal path, so that communications may be capable regardless of the errors. CONSTITUTION: A check process waits for an access from a process for no path testing performances. If a process requests an access, the check process allows the access to the requesting process. If the process does not request the access, the check process carries out the path testing performances. If communication path errors do not occur, the check process does the proper performances. If the communication path errors occur, the check process notifies all accessed processes of error generations. If communication errors occur in a used communication path, the check process carries out a switching performance in other path. Processes for no path testing performances are accessed to a path testing function process. The Processes do the proper performances with other computer and wait for receiving a path error message. When the processes notify the error generations, the check process performs the switching function to other path.
Patent KR-20000073967-A (KR)
Title: Liquid crystal display
Inventor: HAN GWAN YEONG
IPC: G02F1/1337
Filed: 1999-05-17
Abstract: PURPOSE: A liquid crystal display is provided to adjust a line declination angle of a liquid crystal and compensate for a visibility angle, thereby achieving a light visibility angle and having a constant brightness depending on the viewing direction of the screen, resulting in improving the yield of the manufacturing process. CONSTITUTION: In a liquid crystal display, substrates(21,22) are opposed to each other as to form a closed space by injecting a liquid crystal. The first and second of transparent electrodes(23a,23b) are mounted on the substrates. The first liquid crystal orientation film(24a) is formed on the first electrode and oriented into one domain area. The second liquid crystal orientation film(24b) is formed on the second electrode and oriented into a plurality of domain area. A liquid crystal layer(25) is injected in the closed space.
Patent KR-20000074523-A (KR)
Inventor: LEE SEUNG GWON
IPC: G11C19/00
Filed: 1999-05-21
Abstract: PURPOSE: A semiconductor device comprising a reset option circuit is provided which can generate a reset signal selectively by operating a reset circuit comprised in the semiconductor device selectively. CONSTITUTION: A semiconductor device comprises a reset option circuit(120), which can operate a reset circuit(300) comprised in the semiconductor device selectively. The reset option circuit operates the reset circuit selectively according to reset enable data stored in a ROM(Read Only Memory)(110). That is, the reset circuit is comprised uniformly in the semiconductor device in a production step, and the operation of the reset circuit can be selected according to the selection of a user. Therefore, the production cost is reduced. The semiconductor device includes the ROM where reset enable data is stored, and a reset signal generating block generating a reset signal to reset the semiconductor device in response to the reset enable data. The reset signal-generating block generates the reset signal when a power source voltage applied from the external is below a fixed level.
Patent KR-20000016870-A (KR)
Inventor: SIGATSU YOSHI
IPC: H02K1/27
Filed: 1999-05-27
Abstract: PURPOSE: A rotor of motor is provided to lower a crack generation in a frame substrate and improve an exactness in size of a shaft supporting part. CONSTITUTION: The rotor comprises: a frame(29) of resin including a yoke establishing part(30) having a cylindrical shape and a substrate part(31) enclosing a part of the yoke establishing part; a shaft supporting part established in the substrate part, for supporting a rotational shaft; a rotor yoke(35) established in the yoke establishing part, nearly divided into a plural unit yoke(36), and having a cylindrical shape; and a rotor magnet established in the yoke establishing part. Thus, the divided plural unit yokes allow the expansion or retraction of the rotor yoke to be dispersed in the outward direction during the molding of the frame and it becomes difficult that a stress affects the substrate part in the inward direction. As a result, it is prevented that cracks due to a residual stress are generated at the substrate part.
Patent KR-20000075060-A (KR)
Inventor: KANG HO SUL
IPC: F25D23/00
Filed: 1999-05-28
Abstract: PURPOSE: A roller support apparatus is provided to achieve an improved structure with endurance against loading to a roller. CONSTITUTION: An apparatus comprises a roller support member(14) having an inner end supporting a roller(12) to be rotatable and an outer end protruded outwardly from an outer surface of an inner case(20) of a refrigerator; a reinforcing member(16) to which a center of the roller support member is tightly inserted, and which contacts the outer surface of the inner case; and a coupling member(18) screw-coupled to the outer end of the roller support member so as to fix the roller support member. The reinforcing member has an inner end inserted into the inner case, and the inner end of the reinforcing member contacts a support flange(14f) arranged at an outer periphery of the roller support member. Thus, loadings applied onto the roller is supported by the reinforcing member, and the roller support member is fixed by the coupling member.
Patent KR-19990068748-A (KR)
Title: 트랙터용원판쟁기
Filed: 1999-06-17
Abstract: 본 발명은 트랙터용 원판쟁기에 관한 것으로서, 종래의 원판쟁기는 2개의 유압실린더를 사용함에 따른 제작원가의 상승요인이 되었으며 갈이작업을 수행하다가 멈추고 케이스 후방의 웜을 회전시켜 날개프레임의 각도를 조정하여야 하는 번거로움이 있는 문제점이 있었다. 
     본 발명은 이를 해결하기 위한 것으로서, 기어박스(10)의 후단에 길게 연장된 꼬리프레임(30)이 마련되고 이 꼬리프레임(30)의 내부에 유압실린더(32)가 부착되며 이 유압실린더(32)의 피스톤로드(33) 끝단에 슬라이더(34)가 연결되고 이 슬라이더(34)와 날개프레임(20)에 각각 링크(35)가 연결된 기어박스(10) 양측의 날개프레임(20) 각도를 조정하는 각도조정수단이 구비되며, 상기 날개프레임(20) 사이의 선단중앙에는 그 하부로 쟁기지지간(41) 및 고정간(42)이 연장되며 이 고정간(42)의 하단에는 양측으로 갈아 업으면서 전후로 차이를 갖는 보습(43) 및 볏(44)이 부착되고 그 하단에 볏귀(45)가 부착된 보습쟁기(40)가 마련되는 트랙터용 원판쟁기를 제공한다.
Patent KR-20010003049-A (KR)
Inventor: CHO SEONG HYEON
IPC: G02F1/1335
Filed: 1999-06-21
Abstract: PURPOSE: A liquid crystal display device is provided to prevent aperture space from becoming narrow by forming a black matrix only on a pixel electrode corresponding to a thin film transistor. CONSTITUTION: A liquid crystal display device comprises a gate bus line(31) and a data bus line(35) which are vertically crossed on a lower substrate(30). A pixel electrode(37) is formed at each unit pixel space that is defined by the crossed lines(31,35). The pixel electrode(37) is extended so as to be overlapped with side parts of the lines(31,35). A thin film transistor is formed in the vicinity of an intersection of the lines(31,35). A black matrix(38) is formed over a resultant structure of the lower substrate and only on an upper region of the thin film transistor.
Patent KR-20010004813-A (KR)
Inventor: HONG MIN SEON
IPC: A01G1/04
Filed: 1999-06-29
Abstract: PURPOSE: A culture method of mushroom using residue from the preparation of bean curd is provided to increase amount of harvest and to reduce cost of materials. CONSTITUTION: A culture method of mushroom using residue from the preparation of bean curd is characterized by comprising the following steps of: (i)after putting whole culture medium(potato dextrose broth) and liquid culture medium in conical flask, autoclaving at 121°C for 20 min; (ii)after culturing strain in whole culture medium at 25°C for 3 days, inoculating 1ml of the whole culture liquid on 100ml of liquid culture medium and culturing in shaking cultivator at 2 5°C, 200rpm for 5 days; (iii)obtaining a large amount of mycelium of oyster mushroom when adding residue from the preparation of bean curd.
Patent KR-20010005139-A (KR)
Inventor: KIM SEOK YONG
IPC: G05F1/10
Filed: 1999-06-30
Abstract: PURPOSE: A start-up circuit is provided to rapidly supply much current when a main circuit is started in order to shorten a start-up period and be surely separated from the main circuit when the main circuit arrived at a desired operational point. CONSTITUTION: The start-up circuit comprises first to forth transistors(M3,M2,M1,M4). The first transistor(M3) is turned on by the start-up voltage(V1=0V) of a main circuit(32). The second transistor(M2) is turned on by the voltage(V3) according the current(I1) of the first transistor(M3) to supply a start current(I2) from the main circuit(32) and increase the start-up voltage(V1) of the circuit(32). The third transistor(M1) is turned on by the voltage(V3) according to the current(I1) of the first transistor to ground the current(I3) of the transistor(M3). The transistor(M4) is turned on by the start-up voltage(V1) to ground the current(I1).
Patent KR-20010009649-A (KR)
Inventor: PARK JUN HA
IPC: B65G27/32
Filed: 1999-07-08
Abstract: PURPOSE: A parts feeder control system is provided to improve working environment by preventing generation of noise even when a remaining amount of parts is small by vibrating a vibrator with a uniform level under the control of a microcomputer and supply parts smoothly without any malfunction, thereby improving the workability. CONSTITUTION: A system includes a level controller(6), an amplifier(18) serially connected to an outer interface(4) and a microcomputer(12) for generating internal signals and determining the whole maintenance of a controller, a display(20) connected to an output terminal of the microcomputer, a control wave form manipulation part(22), a photo coupler(24) and a triac(26) connected to a vibrator(8) via a power drive(28) in sequence by the other output terminal of the microcomputer, a synchronizing part(32) connected between a power supply(30) and an input terminal of the microcomputer, and a vibration sensor(10) fixed to the vibrator and connected to the other input terminal of the microcomputer via a signal level converter(34).
Patent KR-19990073483-A (KR)
Title: 과전류 계전기를 갖는 에스에스알
IPC: H02H3/08
Filed: 1999-07-16
Abstract: 본 발명은 과전류 계전기를 갖는 SSR에 관한 것으로, SSR 자체에 부하의 과전류를 차단하는 과전류 계전기를 형성시킴으로써, SSR에 의하여 동작되는 부하기기를 과전류로부터 효과적으로 보호할 수 있다. 이를 위하여 본 발명은 입력신호원의 공급에 따른 포토커플러 및 트라이악의 구동에 의하여 삼상 또는 단상의 부하전원을 각각의 부하에 공급하여 부하기기를 동작시키는 SSR에 있어서, 상기 삼상 또는 단상의 부하전원의 전류를 검출하는 전류검출수단과; 상기 전류검출수단에서 검출된 전류를 소정의 전압으로 변환시키는 전압변환수단과; 기준전압을 발생시키는 기준전압발생수단과; 상기 전압변환수단에서 출력되는 전압과 상기 기준전압발생수단에서 출력되는 전압을 비교하여, 검출전압이 기준전압 이상일 경우에 소정신호를 출력하는 비교수단과; 상기 비교수단의 출력을 OR게이트를 거쳐 입력받아 턴온되는 제 1스위칭수단과; 상기 제 1스위칭수단에 의하여 턴온되는 포토릴레이와; 그리고 상기 포토릴레이에 의하여 턴온되어 상기 SSR의 포토커플러의 입력신호원을 차단함으로써 상기 SSR의 구동을 정지시키는 제 2스위칭수단을 구비한다.
Patent KR-19990078776-A (KR)
Title: 마사지 팩
Filed: 1999-08-06
Abstract: 본 발명은 마사지 팩에 관한 것으로 더욱 상세하게는, 보습이 우수한 마사지포에 각종 마사지에 필요한 미용 도포제(塗布劑)를 도포하여 사용자가 간편하게 이용할 수 있도록 제작된 마사지 팩에 관한 것이다. 
     이를 위하여 본 발명은, 안면 전체를 덮을 수 있고 보습이 우수한 마사지포(2)의 적소에 한 쌍의 눈개방부(5)를 형성하고 눈개방부(5)의 중심 하측에 코절취선(6)을 형성하며 코절취선(6)의 하측에 입개방부(7)를 형성하고, 상기 마사지포(2)의 표면에 미용 도포제(3)를 도포하고 도포된 미용 도포제(3)의 양측면으로는 수분과 공기에 대한 비투과성을 가지며 미용 도포제(3)의 성분에 대한 비흡수성을 가지는 재질의 커버(4)를 부착하여서 구성된 것을 특징으로 한다.
Patent KR-20010018669-A (KR)
Inventor: YOUN SEOK HO
IPC: H04B1/40
Filed: 1999-08-20
Abstract: PURPOSE: A game system using a portable terminal and an operating method thereof are provided to enable a user to enjoy games a service server provides by using a portable terminal and a CDMA (Code Division Multiple Access) communication network CONSTITUTION: If a user selects a game start menu among various menus, the portable terminals(100) convert the entire system into a game mode. If the user selects a predetermined menu among the various menus, the portable terminals(100) transmit information corresponding to the selected menu to the external side. The portable terminals(100) receive information transmitted from the external side and outputs the information to be perceived by the user. A service server(200) has rules relating to the communication game. The service server(200) transmits information for processing the communication game to the portable terminals(100). A CDMA communication network(300) connects the portable terminals(100) with the service server(200) for exchanging reciprocal information.
Patent KR-20010018709-A (KR)
Inventor: PARK YEONG SIK
IPC: H04B1/38
Filed: 1999-08-21
Abstract: PURPOSE: A mobile radiophone having a remote controller formed with BLUETOOTH is provided to call without using hands when a user drives, thereby preventing an accident. CONSTITUTION: A remote controller having a BLUETOOTH function is mounted on a detachable flip(100) of a mobile radiophone(200), so that the flip(100) is used as a flip when using the mobile radiophone(200) and is used as a remote controller when a user drives or moves. If the user inputs telephone number by operating a key pad part(116) of the flip(100), a link control part displays the input telephone number in a display part(117). Thereafter, the user pushes a send key and the link control part controls a baseband processing part to transmit a channel connection request signal to the mobile radiophone(200). A mobile radiophone control part receives the channel connection request signal with HCI packet data through a RF receiving part and the baseband processing part. At this time, a call channel is formed between the mobile radiophone and the baseband processing part and the link control part transmits data related to the telephone number to the mobile radiophone(200). The mobile radiophone control part receives the telephone number with HCI packet data through the RF receiving part and the baseband processing part. The mobile radiophone control part performs general wireless originating call procedure with a base station through a BBA(BaseBand Analog), a RF transmitting part, and a duplexer, for calling by using BLUETOOTH module of the flip(100).
Patent KR-20010018756-A (KR)
Inventor: KOO GWANG MO
IPC: F24C15/20
Filed: 1999-08-21
Abstract: PURPOSE: A vent grill device is provided to communicate with the outside at use of a vent grill and to design the front of the vent grill variously. CONSTITUTION: A vent cover is mounted in a vent grill(20) installed in the top front part of a microwave oven and the vent grill is opened and closed selectively by rotating an odorless driving motor(40). A cover driving unit(35) is mounted in the rear part of the vent cover, and a driven gear unit(37) is installed in the cover driving unit. A driving gear(42) is installed in the driving motor and engaged with the driven gear to rotate. Stoppers(25,25') mounted in the vent grill control the rotation direction of the driving motor by regulating the rotation of the cover driving unit. The vent grill is opened and closed selectively by driving the vent cover with the driving motor. The vent grill device diversifies the front shape of the microwave oven and is easy to clean.
Patent KR-19990083943-A (KR)
Title: 바람송출용 팬 및 팬 덮개
Filed: 1999-09-01
Abstract: 본 발명은, 바람 송출용 팬(Fan blade) 및 팬 덮개(Cover)에 관한 것으로, 상기 바람 송출용 팬은, 회전 몸체; 및 상기 회전 몸체의 외주면에 형성되되, 회전시 공기입자를 상기 회전 몸체의 전면 방향인 제1 방향으로 반사시키는 제1 면과, 상기 제1 방향과 구분되는 제2 방향으로 공기입자를 반사시키는 제2 면이 일체로 형성된 팬 날개를 포함하여 구성되는 것을 특징으로 하여, 선풍기의 본체를 좌우로 회전시키지 않고도 보다 넓은 범위에 위치해 있는 여러 사람에게 바람이 송출되도록, 공기입자를 소정의 송풍 각도로 확산 송출함과 아울러, 팬 덮개에 설치된 차단막을 이용하여 상기 확산 송출되는 공기입자의 송풍 각도를 선택적으로 조정함으로써, 서로다른 방향에 위치한 여러 사람이 동시에 선풍기의 바람을 지속적으로 쐴 수 있게 되어 선풍기의 사용 효율을 극대화시킬 수 있으며, 또한, 선풍기 본체를 좌우로 회전시키기 위한 부가적인 구성요소들이 불필요하게 되어 제품의 원가 상승 및 에너지 소비 증가를 원천적으로 억제할 시킬 수 있는 매우 유용한 발명인 것이다.
Patent KR-19990084023-A (KR)
Title: 보장구 의족의 발굽 높낮이 조절기
Filed: 1999-09-07
Abstract: 의수족 보장구의 하나로써 의족에 관한 건. 
     신발 굽 높낮이 조절기 부착