baber/WOPTO huggingface dataset:
Patent KR-20020085906-A (KR)
Title: BCC(BSD CONTROL CENTER) IS WEB-SERVER AND SECURITY MANAGEMENT SYSTEM BASED ON THE FreeBSD ENVIRONMENT
Inventor: HAN JEONG U
IPC: G06F15/00
Filed: 2001-05-10
Abstract: PURPOSE: A web server and security management system is provided to be controlled at an internet web browser under an environment of a Free BSD(Berkeley Software Design) operating system by using a BCC(BSD Control Center). CONSTITUTION: The system comprises a server operation manager and a security operation manager. The server operation manager monitors a management system, sets a system time, manages a DNS, an apache web server and a fire wall, sets a network configuration, monitors data traffic, and manages user data, FTP, mail transmission, HTTPD, and other daemon. The security operation manager identifies a manager, authenticates an access according to an IP(Internet Protocol), transmits data on accessing users to a mobile terminal of a manager, monitors a BCC access process, stores manager instructions, and manages set files. In a case that an internet service request is input, the Free BSD(300) analyzes a TCP/IP and transmits packets to a daemon process(110) of the BCC(100). The daemon process(110) executes the transmitted packets, and an application program(120) reads set files for processing the packets. The application program(120) transmits the process result to a service requester via the daemon process(110).
Patent KR-20010104254-A (KR)
Title: 레이저 용접 헤드 제어시스템과 레이저 용접 헤드 및 그제어방법
IPC: G01B11/00
Filed: 2001-05-10
Abstract: 본 발명은 레이저 용접 헤드 제어시스템과 이 제어시스템이 구비된 레이저 용접 헤드 및 그 제어방법에 관한 것으로서, 본 발명의 제어시스템에는 레이저 입력부와 레이저 출력부를 가지는 레이저 조사체와, 용접상태를 측정하기 위한 복수의 선형 레이저 광선을 발진시키는 복수의 반도체 레이저 장치가 구비된다. 또한, 본 발명의 제어시스템에는 반사된 선형 레이저 광선만을 통과시키는 대역 필터를 가지는 CCD 카메라가 구비된다. 상기 CCD 카메라는 상기 반사된 선형 레이저 광선에 의해 측정된 용접상태를 화상형태로 촬영하게 된다. 또한, 본 발명의 제어시스템에는 상기 측정된 용접상태의 화상을 처리하기 위한 화상처리기가 구비된다. 
     이로써, 본 발명에 의하면, 레이저 용접 헤드의 크기가 축소될 수 있고, 그 제작비용이 절감될 수 있는 효과가 있다. 
     또한, 크기가 축소된 레이저 용접 헤드가 이용되므로 용접가공이 보다 정밀하고 용이하게 실시될 수 있는 효과가 있다.
Patent KR-20010105258-A (KR)
Title: 성막장치 및 성막방법
IPC: H01L21/768
Filed: 2001-05-18
Abstract: 다마신 공정을 사용하여 절연막안에 도전층을 제조하는 방법에 있어서, 성막장치의 구리형성 처리실에서 웨이퍼상에 구리막을 형성한 후에 CMP처리실에서 CMP처리가 웨이퍼에 이루어진다.  CMP처리후에 웨이퍼는 세정처리실에서 세정처리되고, 감압건조실에서 감압건조된다.  감압건조하고 처리된 웨이퍼는 감압상태에서 CVD장치로 반입되기 때문에 웨이퍼상에 형성된 구리막의 자연산화가 확실하게 억제된다.  이렇게 함으로써 도전성 재료의 산화를 최대한 방지할 수 있다.
Patent KR-20020091856-A (KR)
Title: Method for fabricating stiction-resistant micromachined structures
Inventor: BAE GI DEOK
IPC: B81C1/00
Filed: 2001-05-30
Abstract: PURPOSE: A method for manufacturing a structure of MEMS(Micro Electro Mechanical System) for preventing stiction is provided to prevent micro-structures from being sticked to a substrate. CONSTITUTION: A substrate(100) is prepared. A removable stiction preventing layer(101) used in a dry-etching is formed on the substrate(100). A removable sacrificial layer(103) used in a wet-etching is then formed on the stiction preventing layer(101). A post hole is formed to expose the surface of the substrate(100) by selectively etching the stiction preventing layer(101) and the sacrificial layer(103). A structure layer(109) is formed on the resultant structure including the post hole. An SOG(Silicon On Glass), polysilicon, or photoresist is used as the stiction preventing layer(101). Also, the sacrificial layer(103) is one selected from group consisting of PSG(Phosphosilicaglass), SiO2, Cu, Fe, Mo, Ni, Cr, and TEOS(Tetra Ethyl Ortho Silicate) glass.
Patent KR-20020010475-A (KR)
Title: Structure of the earth pin for protector
Inventor: CHOI GYEONG YONG
IPC: H01R4/66
Filed: 2001-06-15
Abstract: PURPOSE: A structure of a protector earth pin, which is constructed in a manner that an earth clip is integrated with an earth plate to maintain secure fixing to an arrester and stable contact with the arrester, is provided to prevent communication equipment and people from being damaged due to over-voltage or over-current. CONSTITUTION: A protector earth pin is constructed in such a manner that an arrester(50) and a hot mat(40) are placed between an earth clip and an earth plate(30) to protect communication apparatuses or subscribers from over-voltage or over-current. The earth clip and earth plate are integrated with each other. The integrated structure has a thickness thinner than the thickness of the arrester such that the arrester can be supported by spring force. The structure has a lead-in contact point of a contact portion divided into two branches.
Patent KR-20020095825-A (KR)
Title: Spark gar capacitor
Inventor: KIM CHOONG YUL
IPC: H01T1/00
Filed: 2001-06-15
Abstract: PURPOSE: A spark gap capacitor is provided to form gaps in a uniform manner, while achieving improved quality and reducing manufacturing costs. CONSTITUTION: A lead member(49) is formed by a copper wire, and the upper portion of the lead member is curved into a bottle neck shape so as to form a curved portion(42). The upper portion of the curved portion is formed into a pole part(43), and the portion underneath the curved portion is formed into a lead wire(40) having a lead part(41). The lead wire is connected to the lower end of the lead part through a dam bar(D4). The lead part is interposed between upper and lower tapes(45,44) so as to form a strip shape. The pole part of the lead wire is cut into two pole parts(43a,43b), and the separated pole parts are pressed into curved surfaces(B) so as to form a gap(G4). The gap is coated with a paraffin(47) so as to form a space around the gap. The paraffin is coated with an insulating material(48), the insulating material is sintered to form an insulator(48'), and the paraffin is molten to be absorbed into the insulator.
Patent KR-20020063478-A (KR)
Title: High heat generation kiln using combustion heat of BROWN gas
Inventor: KIM SEON IL
IPC: F23D14/28
Filed: 2001-06-16
Abstract: PURPOSE: A heating furnace is provided to maximize high temperature energy by using combustion characteristic of brown gas. CONSTITUTION: A gauge, automatic control devices, an instrument panel, a power supplying/shutting device, and an air exhaust port(6) are formed on a surface of a container(4) made of refractory material. A bearing(9) is attached to a fixing bar(17) bonded to the container(4). A heating member(13) is bonded to the bearing(9) so as to generate heat when it makes contact with brown gas combustion flame. The heating member(13) is installed on a rotating shaft(15). A heating member rotating gear(3) is attached to the heating member(13) and the rotating shaft(15). A rotary gear(14) for reducing the speed of a motor(1) is positioned between the heating member rotating gear(3) and the motor(1). An air injection device(2) connected to an air injection pipe(8). A gas injection pipe(11) and a nozzle torch(12) are provided at an outer portion of the container(4) towards the heating member(13).
Patent KR-20030001825-A (KR)
Title: Phase locked loop circuit for reducing electromagnetic interference and control method thereof
Inventor: JUN PIL JAE
IPC: H03L7/099
Filed: 2001-06-28
Abstract: PURPOSE: A phase locked loop(PLL) to reduce electromagnetic interference and a control method thereof are provided, which reduces electromagnetic interference effectively by reducing an energy level of frequencies generated from the electromagnetic interference in a broadband. CONSTITUTION: The phase locked loop(PLL) to reduce electromagnetic interference includes a phase comparator(10) comparing phases of a reference clock signal(Fref) and a feedback clock signal(Ffb) and outputting an up signal(UP) or a down signal(DN) according to the comparison result, and a charge pump(12) generating a charge signal to supply or sink charges in response to the up signal or the down signal, and a loop filter(14) generates a DC control voltage by filtering the charge signal in a low pass band. A voltage controlled oscillator(16) generates an output clock signal oscillated as an oscillation frequency corresponding to the control voltage. A multi phase interpolator(18) generates overlapping signals(CLK0-CLKn-1) having an offset using the output clock signal. And a feedback signal output part(24) judges whether the feedback clock signal is locked to the reference clock signal by inputting the up/down signal, and outputs the output clock signal as the feedback clock signal before it is locked, and outputs the feedback clock signal by selecting overlapping clock signals sequentially when it is locked.
Patent KR-20020025655-A (KR)
Title: Linear oscillator
Inventor: ARIKAWA YASUSHI
IPC: B26B19/28
Filed: 2001-07-02
Abstract: PURPOSE: A linear oscillator is provided to give a low vibration and small noise and achieve a small size oscillator. CONSTITUTION: A linear oscillator comprises a moving part(1) reciprocating, a case(10) containing incorporating the moving part, and an amplitude control spindle(9) supported in the case to be movable, wherein the moving part and the amplitude control spindle reciprocate at a resonance frequency of the linear oscillator or a frequency in a vicinity thereof.
Patent KR-20030003495-A (KR)
Title: Wormwood resin and wormwood sap contain a food packing meterials manufacturing process
Inventor: SHON BYOUNG DO
IPC: C08J5/18
Filed: 2001-07-03
Abstract: PURPOSE: Provided is a process for producing food packing material having excellent sterilizing ability and antimicrobial ability by adding mugwort extract or juice to polyethylene. CONSTITUTION: The process comprises the steps of: mixing about 25kg of the polyethylene granules and about 2.5kg of the mugwort extract and/or juice to prepare a first mixture; mixing about 2.5-7.5kg of the first mixture and about 25kg of the polyethylene granules to prepare a second mixture; melting and extruding the second mixture and forming the food packing material.
Patent KR-20030003893-A (KR)
Inventor: JUNG BONG SEOK
IPC: H01L21/60
Filed: 2001-07-04
Abstract: PURPOSE: A solder ball bumping device is provided to selectively absorb and bump a solder ball to a good or defective printed circuit board(PCB) by forming vacuum absorption lines in every PCB unit. CONSTITUTION: A plurality of the first through holes are formed in an upper block and a vacuum absorption hose(50) is connected to the through holes. A guide flow path withdrawn from the second through hole is formed on the rear surface of an intermediate block having the second through hole formed in the same position as the first through hole of the upper block. A lower block has the third through hole connected to the end of the guide flow path, coupled to the upper block and airtightly shutting the intermediate block. A solder ball absorbing strip includes a plurality of solder ball absorbing units having a one-to-one correspondence with the third through hole, attached to the rear surface of the lower block.
Patent KR-20020005449-A (KR)
Inventor: MURAKAMI HIROSHI
IPC: H01J37/34
Filed: 2001-07-05
Abstract: PURPOSE: To provide a vacuum arc evaporation source, with which a laminated film consisting of a plurality of dissimilar films can be deposited by using evaporation sources smaller in number than those heretofore in use. CONSTITUTION: This vacuum arc evaporation source 30 is used for the purpose of evaporating cathodes by vacuum arc discharge to produce plasma 36, 38 containing cathode materials and has two mutually electrically insulated cathodes 32, 34 composed of materials different in kind from each other. Both the cathodes 32, 34 are arranged coaxially with each other, having an insulator 40 interposed between them. By using this vacuum arc evaporation source 30, the two cathodes 32, 34 can be used while being switched. Resultantly, the laminated film consisting of a plurality of dissimilar films can be deposited by using the evaporation sources smaller in number than those heretofore in use.
Patent KR-20030006516-A (KR)
Inventor: KIM SEON YEONG
IPC: H01L21/02
Filed: 2001-07-13
Abstract: PURPOSE: A gas delivery device is provided to secure an operator from a danger of an additional process for inspecting residual gas by automatically detecting the residual gas while using a sensor installed in a vent line. CONSTITUTION: A plurality of cylinders(12,14) are prepared. A plurality of process lines(16,18) are connected to an end of the plurality of cylinders and transfers storage gas to a chamber. A plurality of the first valves are connected in series to each process line. The vent line(20) is commonly connected to the process lines. A plurality of the second valves controls the gas transferred from the plurality of process lines, connected to the vent line. A sensor senses the residual gas of the vent line transferred through the second valve, installed in a common connection point of the vent line. A plurality of sensors for sensing gas pressure are installed in the plurality of process lines, respectively.
Patent KR-20030006779-A (KR)
Title: The dual final- reduction apparatus
Inventor: CHAE GWANG SU
IPC: F16H3/44
Filed: 2001-07-16
Abstract: PURPOSE: A double drive reduction gear is provided to optimize the lowest road clearance of a vehicle by reducing the sectional diameter of a housing. CONSTITUTION: A double drive reduction gear comprises a housing(50), a pinion gear(60) installed in the housing and connected with the propulsion shaft of an engine, a ring gear(70) perpendicularly engaged with the rotating shaft of the pinion gear when rotating and having a sun gear(71) having outer teeth, a round internal gear(80) connected to the inside of the housing and having inner teeth, a planetary gear(90) installed between the sun gear of the ring gear and the internal gear, and a differential unit(100) connected to the rotating shaft of the planetary gear and absorbing the rotational difference of left and right vehicle shafts.
Patent KR-20030008093-A (KR)
Title: Ice maker for refrigerator
Inventor: AHN SI YEON
IPC: F25C1/24
Filed: 2001-07-16
Abstract: PURPOSE: An icemaker for refrigerator is provided to rapidly and efficiently make ice. CONSTITUTION: A chilled air passing hole(32) is formed on a front plate(18) extending downward from a front side of an ice making tray(12) supplied with water to form ice to be fluidically connected with the ice making tray behind so that chilled air flows to the rear side. A louvering(30) facing supplied chilled air is formed on the front plate so that chilled air supplied through the chilled air passing hole formed thereby contacts with the ice making tray. The chilled air passing hole and the louvering make more chilled air flow to the ice making tray.
Patent KR-20010099002-A (KR)
Title: 벡터량 검출 센서, 방법 및 이를 이용한 원격 제어 장치
Inventor: CHOI HUI GYO
IPC: H04Q9/00
Filed: 2001-08-07
Abstract: 방향 및 크기 정보를 포함하는 벡터량을 검출하고, 벡터량으로 피제어 기기를 제어할 수 있도록, 본 발명은, 
     중앙부에 형성되는 엔터 키 패턴, 상기 엔터 키 패턴의 외측에서 원주 방향으로 복수 개 분할된 각 파이 영역 내에 설정 형태로 전극선이 형성되는 방향성 전극 패턴, 및 상기 각 방향성 전극 패턴의 전극선과 인접하게 전극선이 형성되는 공통 전극 패턴을 포함하는 전극 패턴이 형성된 기판 위에, 상기 전극 패턴을 덮도록 압력 가변형 저항 필름을 설치하고 그 위에는 상기 저항필름을 가압하도록 가압부재를 개재한 벡터량 검출 센서, 
     복수로 설정된 각 방향으로의 압력 성분을 검출하여 이를 기초로 벡터량의 방향 및 크기를 결정하는 벡터량 검출 방법, 및 
     벡터량 검출 센서, 상기 벡터량 검출 센서로부터 검출 신호를 입력받아 벡터량의 제어신호로 처리하여 출력하는 중앙처리부, 및 상기 중앙처리부의 출력에 의해 제어신호를 피제어 기기로 송출하는 신호발생부를 포함하여 구성되는 원격 제어 장치를 제공한다.
Patent KR-20020014736-A (KR)
Inventor: TAMAYAMA RYUZO
IPC: G11B20/00
Filed: 2001-08-16
Abstract: PURPOSE: To configure a system which can reproduce a surround phonic sound easily using a multichannel sound signal reproducing apparatus at least having a DVD reproducing section. CONSTITUTION: The multichannel sound signal reproducing apparatus integrating a DVD, a CD, a radio and a speaker is carriable and connected with a TV receiver through an IEEE 1394 or USB interface. Assuming the TV receiver side is the main speaker side and the multichannel sound signal reproducing apparatus body side is the sub-speaker side, e.g. the rear speaker side, the main speaker side is made controllable from the multichannel sound signal reproducing apparatus body side.
Patent KR-20020025670-A (KR)
Title: Water quality improving materials and method for producing the same materials
Inventor: ITO JUNRO
IPC: C02F1/68
Filed: 2001-08-27
Abstract: PURPOSE: A water quality improving material used in a washing device for washing the surfaces of automobiles, rolling stock, and ships by using only jets of water and forming coats on the washed surfaces is provided to save labor, reduce cost, and to make detergents and wax unnecessary. CONSTITUTION: Raw ceramic powder material containing tourmaline is adhered on the surfaces of ceramic carriers, and then fired to form tourmaline containing films, whereby washing power is improved by activated water and the contained boric silica(S1,S2) adheres onto the surface(W) of an automobile, etc. As a form thereof, the boric silica is adhered by an electrodeposition action due to the electric charges generated by tourmaline and the water is activated by these electric charges.
Patent KR-20030018278-A (KR)
Title: Chair for massage with solenoid
Inventor: PARK JEONG HUN
IPC: A61H35/00
Filed: 2001-08-27
Abstract: PURPOSE: A massage chair using solenoid is provided to permit a seat to move forward or backward. The massage chair generates a whirlpool which may press the instep and also the sole of a foot simultaneously. CONSTITUTION: The massage chair comprises a foot bathtub massaging a foot by injecting water to a foot, a pivot to control the inclined angle of the seat back supporting the back of a user and a seat cushion(40) on which a user is seating and a movable clamping element which moves the seat cushion forward or backward. The seat back(10) comprises: a fixing belt formed inside of the seat back(10) and located in longitudinal direction of the seat back; a plurality of solenoids which are arranged in a row and fixed by the fixing belt; and a clamping element which clamps the fixing belt and the solenoids.
Patent KR-20030019975-A (KR)
Title: Method and system for phonetic recognition
Inventor: CHI FENG CHIA
IPC: G10L15/04
Filed: 2001-08-28
Abstract: PURPOSE: A voice recognition method and a system are provided to distinguish Chinese characters by detecting voice sound of a user with analyzing tone of the user and by sorting emotion of the user according to change of volume. CONSTITUTION: A voice recognition system(1) comprises a voice converting processing module(2), voice recognition database(3), a voice recognition processing module(4), and character database(5) corresponding to voice sound. The voice converting processing module converts voice sound into electronic signals. The memory of the computer stores voice recognition database, voice sound and character database. The voice recognition system detects voice of a user, and distinguishes Chinese characters corresponding to four tones of voice sound of the user. The voice is recognized by analyzing tone of the user, and the emotion is detected by analyzing change of volume.
Patent KR-20030034495-A (KR)
Title: Cleanning method of deep trench
Inventor: LEE CHEOL UNG
IPC: H01L21/302
Filed: 2001-10-23
Abstract: PURPOSE: A method for cleaning a deep trench is provided to prevent a void from being formed between a trench and an oxide layer by applying thermal energy to a polymer layer. CONSTITUTION: The deep trench(102) is formed in a silicon substrate(100). Thermal energy is applied to the polymer layer(104) formed on the trench. The polymer layer is eliminated by using hydrogen fluoride. An etch mask pattern used in forming the trench is an oxide layer pattern. A dry-etch method is used in forming the trench. The thermal energy is supplied by using an electron beam and a bake process.
Patent KR-20030033660-A (KR)
Title: Plasma Display Panel and Driving Method Thereof and Fabricating Method of lower Substrate Thereof
Inventor: KIM JEONG HUN
IPC: G09G3/296
Filed: 2001-10-24
Abstract: PURPOSE: A plasma display panel, a driving method thereof, and a method for fabricating a lower substrate thereof are provided to improve the discharge efficiency by using a plurality of auxiliary electrodes. CONSTITUTION: A scan electrode(46) and a sustain electrode(48) are formed on a back face of an upper plate(40). A plurality of bus electrodes(46',48') are formed on the scan electrode(46) and the sustain electrode(48). An upper dielectric layer(50) is formed on an upper substrate(44) of the upper plate(40). A protective layer(52) is formed on the upper dielectric layer(50). A plurality of auxiliary electrodes(56,58) are formed on a lower substrate(54) of a lower plate(42). An address electrode(62) is formed on the scan electrode(46) and the sustain electrode(48). The first lower dielectric layer(60) is formed between the auxiliary electrodes(56,58) and the address electrode(62). The second lower dielectric layer(64) is formed on the lower substrate(54) and the address electrode(62). A barrier rib(66) is vertically formed between the upper plate(40) and the lower plate(42). A phosphor(68) is coated on each surface of the second lower dielectric layer(64) and the barrier rib(66).
Patent KR-20010107828-A (KR)
Title: 현금을 이용한 상거래시 거래 잔액에 대한 적립 및 활용방법
Inventor: KANG SEONG BONG
Filed: 2001-10-25
Abstract: 본 발명은 현금을 이용한 상거래시 거래 잔액에 대한 적립 및 활용방법에 관한 것으로서, 특히 개인이 마트(Mart)나 백화점 등지에서 현금거래를 할 경우 남은 잔액을 마트 카드나 백화점 카드 또는 거래 잔액 적립카드 또는 회원 정보란 등에 적립하는 일반 상거래시 거래 잔액에 대한 적립 및 활용방법에 관한 것이다. 
     일반 상거래시 거래 잔액 적립을 원하는 소비자는 먼저, 마트나 백화점 등과 같은 상점에서 거래 잔액 적립에 관한 약정서 및 거래 잔액 적립에 관한 관련 서류에 동의한 후, 다음으로 물품을 구입시 남은 잔액에 대해서 적립을 하게된다. 향후 소비자는 다음 거래에서 이 잔액을 이용하거나 계속해서 적립을 할 수 있게되는 방법이다. 또한 본 발명은 서로 거래 잔액 적립 및 이용에 관한 제휴 회사간에는 거래잔액을 통합하여 운영할 수 있고 또한 적립된 거래 잔액을 이용하여 제휴회사간 물품거래를 할 수 있게되는 방법이다. 
     따라서, 본 발명은 물품거래자가 거래시 소액 잔액 및 동전을 받지 않고 적립함으로써, 보다 간편한 상거래를 할 수 있으며, 물품제공자 입장에서도 원할 한 매장 운영을 할 수 있도록 한다. 또한 동전 사용량을 점진적으로 줄일 수 있는 획기적인 방법으로 국가 재정 기여 및 통화정책에도 기여할 수 있게된다.
Patent KR-20030035367-A (KR)
Title: heavy-metal remover using starfish
Inventor: LEE SEUNG MOK
IPC: C02F1/62
Filed: 2001-10-31
Abstract: PURPOSE: Provided is an agent made of starfish, for the removal of heavy metals from heavy metal wastewater. CONSTITUTION: The agent for heavy metal removal is prepared by drying starfish at 90 to 120 deg.C for 1 to 3 hrs; incinerating the dried starfish at 400 to 700 deg.C, followed by crush; and sieving the starfish powder.
Patent KR-20030035695-A (KR)
Title: Apparatus for measuring and collecting for bearing abrasion particle in bearing housing
Inventor: HAN HUI YUN
IPC: G01N3/56
Filed: 2001-11-02
Abstract: PURPOSE: An apparatus for measuring and collecting bearing abrasion particles in a bearing housing is provided to easily grasp lubrication state of a bearing, thereby preventing lowering of the productivity due to a sudden trouble. CONSTITUTION: A grease absorbing and main body part absorbs grease including abrasion particles of bearings(32,36). A ferrous abrasion particle measuring part is connected with a pump main body(8) of the grease absorbing and main body part for detecting a change in a magnetic resistivity by the abrasion particles of the bearings by a current supplied to input and output coils(21,22) installed at a sensor block(20) where the grease moves. The ferrous abrasion particle measuring part diagnoses lubrication state of the bearings by the ferrous density of the grease. A ferrous abrasion particle collecting part separates the measured and collected ferrous abrasion particles.
Patent KR-20030037185-A (KR)
Title: Cathode ray tube possessing a shadow mask which has improved capability of shock-absorbing
Inventor: JUN SANG HO
IPC: H01J29/07
Filed: 2001-11-02
Abstract: PURPOSE: A cathode ray tube is provided to be capable of effectively blocking stresses occurred in the welding part and the boundary part of a mask frame. CONSTITUTION: A mask frame(25) is suspended in the inside of a cathode ray tube panel(10). A shadow mask(23) is formed to integrate a hole part, an edge part, and a skirt part(23c). A welding part comprises a plurality of welding points formed on the shadow mask. The shadow mask is welded and supported to the mask frame through the welding part. The skirt part has a basic etching part whose surface is half-etched in a predetermined illuminance. An additional etching part is formed between the welding part and the basic etching part. The additional etching part is half-etched in the illuminance more than that of the basic etching part.