baber/WOPTO huggingface dataset:
Patent KR-20010023606-A (KR)
IPC: B32B7/00
Filed: 1999-06-30
Abstract: A photovoltaic module (1) in the form of a laminate with a solar cell system (2) as the core between encapsulating materials (3, 3'), in which at least one of these materials (3') comprises a sealing layer (4') and a barrier layer (6) consisting of a plastic film or compound foil with an inorganic oxide layer (7) deposited from the vapor phase. An Independent claim is also included for a process for the production of a module (1) by (a) vapor-phase deposition of an oxide layer (7) on a plastic film or compound foil (6), (b) encapsulation of a solar cell system (2) between sealing layers (4, 4'), (c) transferring the module stack to the loading station of a system in which it is kept at a temperature below the softening point of layers (4, 4'), (d) transferring the stack to a vacuum laminator in which it is heated under vacuum to the softening point of (4, 4') and (e) letting in air without cooling, transferring the composite body to a hardening oven and hardening layers (4, 4') to form a laminated module (2) which is then cooled and taken out for further processing.
Patent KR-20010024177-A (KR)
Title: 고체 산화물 연료전지용 소결전극
IPC: H01M8/12
Filed: 1998-09-21
Abstract: 고체 산화물 연료전지 전극은 소결공정에 의해서 만들어진다. 하층(6)은 슬러리의 형태로 고체 산화물 연료전지의 전해질(4)에 적용되고, 건조된다. 상층(8)은 하층(6)에 적용되고, 건조된다. 다음, 건조된 하층(6) 및 상층(8)은 연료 전극을 형성하기 위해 소결된다. 하층은 더 큰 퍼센티지의 전극 금속을 포함하며, 하층 및 상층은 전극금속 및 안정화된 지르코니아의 조합을 포함한다. 하층에서의 더 안정된 지르코니아의 사용은 우수한 접착력을 전해질에 제공하며, 상층에서의 더 큰 퍼센티지의 전극 금속의 사용은 우수한 전기전도성을 제공한다. 소결된 전극은 고성능의 특성을 가지며, 열화가 없으며, 우수한 다공성, 접착력, 전기전도성을 포함한다.
Patent KR-20010024700-A (KR)
Inventor: MASON JEFFREY JOHN
IPC: B29C48/345
Filed: 1998-11-11
Abstract: The present invention relates to foamed products. More particularly, the present invention relates to foamed products comprising a plurality of coalesced extruded strands or profiles or layers of a foamed thermoplastic composition having a low density.
Patent KR-20010034098-A (KR)
Title: 일회용 트렁크형 팬츠 및 그 제조 방법
IPC: A41B9/00
Filed: 1999-11-12
Abstract: 상하로 연장되는 가상 평면을 사이에 두고 서로 면대칭에 있는 한 쌍의 외측 시트(B1, B2)와, 평면과 외측 시트(B1, B2)의 사이에 위치하여 서로 면대칭에 있는 한 쌍의 내측 시트(A1, A2)를 가지며, 평면의 양측 각각에서 외측 시트(B1, B2)와 내측 시트(A1, A2)가 서로 중첩되어 상하로 연장되는 측 가장자리부에서 합장형으로 접합되고, 내측 시트(A1, A2)가 평면상에서 서로 중첩되어 내측 시트(A1, A2)의 상부 가장자리로부터 하부 가장자리를 향하여 원호를 그리는 오목 홈부의 가장자리부에서 접합되고, 외측 시트(B1, B2)와 내측 시트(Al, A2) 중의 적어도 한 쪽의 몸통 둘레 개구(12)의 가장자리 부분에 둘레 방향으로 연장되는 탄성 부재(10, 11)가 부착되어 있다.
Patent KR-20010034131-A (KR)
Title: 정보기록매체 및 그 매체의 데이터를 기록 또는 재생하는장치 및 방법
IPC: G11B27/32
Filed: 1999-11-18
Abstract: 본 발명은 여러 AV  스트림을 기록하는 기록매체를 제공하며 이에 의해 랜덤액세스가 가능하며, 이 매체는 DVD-RAM  등에 적합하다. 본 발명은 또한 기록매체를 액세스하는 장치 및 방법을 제공한다. 정보기록매체(100)는 관리정보로서 오브젝트를 관리하는 오브젝트 정보를 저장한다. 이 오브젝트 정보는 ECC블럭의 정수배수로된 각 블럭유니트에 대한 MPEG전송스트림을 관리하는 액세스 맵(80c)을 구비하며, 이 액세스 맵은 블럭에 대한 소정의 액세스정보이외에 상기 블럭이 I-픽처를 포함하는지를 나타내는 플랙(811a)을 구비한다.
Patent KR-20010086256-A (KR)
Title: 자동차에 대한, 효율적 통신 및 위성위치확인시스템(ｇｐｓ)기반 광고정보의 제공 기법
IPC: G08G1/0969
Filed: 1999-12-06
Abstract: 자동차에 있어서, 자동차와의 통신은 메시지의 형태이다. 이러한 메시지들은 각 메시지들이 식별자, 예를 들어, 자동차를 식별하는 차량 식별 번호(VIN)를 포함하는, 목적지 혹은 발신지 주소를 가지는 "전자 자동차-메일" 혹은 "C-메일" 메시지로 언급된다. 상기 메시지는 원격 서버로부터 통신 네트워크, 예를 들어, 인터넷을 통하여 자동차로 전달될 수 있다. 하나의 이러한 메시지는 자동차에 대한 리콜 공지를 포함할 수 있다. 또다른 메시지는 자동차의 현재 위치에 의존하여, 네비게이션을 위한 저스트-인-타임(just-in-time) 지도를 포함할 수 있다. 또다른 메시지는 현재 차량의 위치에 또한 의존하여, 선택된 엔티티들, 예를 들어, 식당, 주유소, 백화점 등에 관련된 광고 정보를 포함할 수 있다. 자동차로부터 원격 서버로 발신되는 메시지는, 예를 들어 자동차의 위치를 식별하는 GPS 정보, 분석을 위해 자동차내의 센서들에 의해 공급되는 동적 데이터, 기록을 위한 거리적산계 기록 및 속도계 기록 등을 포함할 수 있다.
Patent KR-20010072551-A (KR)
Title: 반사 방지막
IPC: G02B1/11
Filed: 1999-02-19
Abstract: 본 발명에 따른 반사 방지 코팅에는 하나 이상의 무기 반사 방지층(통상 산화 금속 또는 실리카층), 현장에서 경화되는 중합체층이 포함되고, 상기 중합체층의 굴절율은 400 nm 내지 700 nm의 파장 범위에 걸쳐 1.53보다 크지 않으며, 그 두께는 약 20 nm 내지 약 200 nm이다.  상기 중합체층은 양호한 스크래치 및 지문 날인 보호 특성을 제공하고, 무기 반사 방지층의 두께를 감소시킬 수 있도록 해주어 반사 방지 코팅의 제조 비용을 절감시킨다.
Patent KR-20010052592-A (KR)
Title: 증기 소독 장치
IPC: A61L2/07
Filed: 1999-04-22
Abstract: 본 발명은 소독실과, 여기에 설치된 진공펌프를 갖는 증기 소독장치에 관한 것이다.  통상의 증기 소독 장치, 일명 내압 증기 소독기는 보통 소독실에 존재하는 증기압을 낮추기 위하여 추가적인 배출구와 이에 따른 전자기 밸브를 갖는다.  상기 전자기 밸브를 갖는 추가적인 배출구를 제거하기 위하여, 본 발명에 따른 진공 펌프의 흡입구, 내압실 및 압력 배출구는 배출과정 동안에 소독실로부터 배출되는 증기에 대한 배출관 역할을 한다.  본 발명에 따른 진공 펌프에서 분출 매체와 접촉하는 부분은 열전도도가 낮은 물질로 이루어져 있어서, 증기로 인한 펌프 헤드의 가열을 효과적으로 방지할 수 있고, 펌프의 복잡한 공기나 물을 통한 냉각 장치가 필요없다.
Patent KR-20010071469-A (KR)
IPC: G01N24/10
Filed: 1999-06-24
Abstract: A check weighing system is provided which can check weigh samples (1) on a production line. The check weighing system comprises a magnet (13) for creating a static magnetic field over an interrogation zone for creating a net magnetisation within a sample (1) located within the interrogation zone and an RF coil for applying an alternating magnetic field over the interrogation zone for causing excitation of the sample (1) within the interrogation zone according to the principles of NMR. The check weighing system also comprises a sensor for sensing the energy emitted as the sample relaxes back to an equilibrium state after excitation as the samples pass through the interrogation zone on a conveyor belt (9) forming part of the production line. The sensed signal from the sample (1) is then compared with calibration data which is obtained for at least one similar sample of known mass, which calibration data relates the mass of the similar sample to the corresponding signal output by the sensor, to provide the indication of the mass of the sample.
Patent KR-20020057577-A (KR)
Title: Method of fabricating semiconductor devices
Inventor: SA SEUNG HUN
IPC: H01L21/24
Filed: 2001-01-02
Abstract: PURPOSE: A method for fabricating a semiconductor device is provided to form a thin silicide layer and a shallow junction and improve a junction margin for a hot-carrier by providing an active region with the sufficient amount of silicon. CONSTITUTION: An active region and an isolation region are defined by forming a field oxide layer(21) on a predetermined part of a silicon substrate(20). A gate oxide layer(22) is formed by performing a thermal oxidation process for a surface of the semiconductor substrate(20). A gate(23) is defined by depositing and patterning a polysilicon thereon. A low density doped region(24) is formed by implanting N type dopants into the semiconductor substrate(20). A sidewall spacer(25) is formed on a side face of the gate(23). A high density doped region(26) is formed by implanting N type dopants into the semiconductor substrate(20). A low density dopant diffused region(24) and a high density dopant diffused region(26) are formed by performing a predetermined thermal process. A plurality of self-aligned silicide layers(270,271) are formed on a gate(23) and the high density dopant diffused region(26).
Patent KR-20020057410-A (KR)
Title: Refrigerator
Inventor: MUN SEON JU
IPC: F25D23/00
Filed: 2001-01-04
Abstract: PURPOSE: A refrigerator is provided to easily adjust height of a main body thereof by easily rotating supportive legs of a supportive device. CONSTITUTION: A supportive device(30) is joined on a bottom of a main body(10) and includes a bolt part(41) joined to the main body with screw and a supportive part(42) fixed on a lower end of the bolt part and having receiving grooves(44) lengthily and vertically formed on an outside thereof to receive handles(43) so that the handles are hingedly connected thereto, and has the handles having push parts(46) protruding out of the receiving grooves to be easily drawn out of the receiving groove so that the supportive device is easily rotated thereby.
Patent KR-20020057728-A (KR)
Title: scalp cleanser
Inventor: JEON EUN SANG
IPC: A61Q5/02
Filed: 2001-01-06
Abstract: PURPOSE: A composition for washing scalp and hair obtained by mixing a Chinese herbal extract and a seaweed extract with triethanol amine, benzoic acid and ethyl alcohol is provided which has an affect on stimulating the growth of hair on the scalp and washing the scalp and hair. CONSTITUTION: A mixture of 100g Ganoderma lucidum, 150g Angelicae gigantis radix, 16g red ginseng, 56g Astragali radix, 10g seaweeds is mixed with 4.5L water and heated at 90 to 95deg.C for 3hrs to produce a 4L extract, which is mixed with 32g triethanol amine, 12g benzoic acid and 380ml ethyl alcohol and aged for 48hrs in an ultrasonic wave ageing device(15Khz).
Patent KR-20020061438-A (KR)
Inventor: PARK SEON MAN
IPC: F16K17/00
Filed: 2001-01-17
Abstract: PURPOSE: A safety gas valve is provided to automatically cut off gas supply and to prevent gas accidents when gas leaks or an earthquake occurs. CONSTITUTION: A safety gas valve(1) is composed of a body(2), a cover(3), an actuator(10), a device for sensing earthquake, and an operating lever(35). A gas inlet(6) is installed to the lower part of the body. The cover is covered to the upper part of the body and the cover forms a gas outlet(7) to the upper part. The actuator is installed within the body and moved by the tension of gas pressure and a spring(25) up and down. The actuator opens and shuts the gas inlet and gas outlet. The device for sensing earthquake is installed within the body. The operating lever releases constraint of the actuator when the device for sensing earthquake senses earthquake. Therefore, gas accidents are prevented.
Patent KR-20020064500-A (KR)
Inventor: CHOI GANG JIN
IPC: F16D65/56
Filed: 2001-02-02
Abstract: PURPOSE: An adjuster assembly for a drum brake is provided to adjust clearance between the drum and a lining stably and accurately, and to improve reliability by preventing adhesion of an adjustable nut. CONSTITUTION: A drum brake is composed of a drum rotating with a wheel, a leading shoe and a trailing shoe attaching a lining for braking from friction with the drum, and an adjuster assembly(60) arranged between leading and trailing shoes to adjust clearance between the drum and the lining. The adjuster assembly consists of a female rod(61) combined with the leading shoe, a male rod(62) combined with the trailing shoe and inserted to the hollow of the female rod, and an adjustable nut(63) having an internal treaded part(63a) combined with a spiral shaft(62a) to move the male rod in rotating. An adhesion preventive sill(62c) is formed in the rear end of the spiral shaft to prevent the engagement of the adjustable nut. Clearance between the drum and the lining is adjusted accurately with rotating the adjustable nut actively regardless of position.
Patent KR-20010035319-A (KR)
Title: Nonskid Scale(Ruler)
Inventor: PARK JUNE KEY
IPC: B43L7/00
Filed: 2001-02-02
Abstract: PURPOSE: A slipping resistant ruler is provided to prevent waste of a material to be cut due to slipping occurred when drawing a line on paper with a pen or cutting an object such as paper with a ruler hold on by adhering a rubber film having a strong friction force to an ordinary ruler so that the object and ruler are not slipped during using. CONSTITUTION: The slipping resistant ruler is made by adhering a film of a particular material having a rubber constituent or a strong friction force for preventing slipping to bottom surface of an ordinarily used ruler.
Patent KR-20020065024-A (KR)
Inventor: CHOI BYEONG EUN
IPC: E01D19/00
Filed: 2001-02-05
Abstract: PURPOSE: A fixing method for a PSC beam is provided to shorten the period of construction and to obtain economical effects by fixing a PSC beam firmly with a simple method. CONSTITUTION: The fixing method for a PSC beam comprises the steps of manufacturing a PSC beam(1) and forming connecting nuts(3) on a web(2) of the PSC beam(1) at regular intervals, forming connecting bolts(4') on both ends of a horizontal connecting steel bar(4) for preventing the inversion of the PSC beam(1), screwing one end of the horizontal connecting steel bar(4) to the connecting nut(4') of the PSC beam(1) and connecting the other end of the horizontal connecting steel bar(4) to the connecting nut(3) of the PSC beam(1) by interposing a connector(5).
Patent KR-20020066826-A (KR)
Title: Flat type vibration motor
Inventor: EOM JAE JUN
IPC: H02K7/075
Filed: 2001-02-14
Abstract: PURPOSE: A flat-type vibration motor is provided to lower the voltage for starting rotor, while reducing noise and lengthening useful life of brush by preventing excessive friction between the rotor and brush. CONSTITUTION: A flat-type vibration motor(100) comprises a case(110) having upper and lower cases(111,115) coupled with each other; a lower substrate(121) installed at the central portion of the lower case; a shaft(123) installed at the center of the lower case; a ring-shaped magnet(140) fixed to the edge of the lower case, and which has a pole of 2n(wherein, n is a natural number); a rotor(150) installed to be rotatable to the shaft; first and second coils(161,163) spaced apart from each other, and integrated onto the upper surface of the rotor; an upper substrate formed integrally with the bottom surface of the rotor; a commutator printed onto the upper substrate in such a manner that the commutator is opposed to the lower substrate, and connected to the first and second coils; and a positive brush(131) and a negative brush(133) each of which has an end fixed to the lower substrate and the other end contacting the commutator, respectively.
Patent KR-20020068713-A (KR)
Title: Organic light-emitting device using composition of bis(10-hydroxybenzoquinolinato)beryllium and bis(2-methyl-8-hydroxyquinolinato) beryllium as light-emitting material
Inventor: HA YUN GYEONG
IPC: C09K11/06
Filed: 2001-02-22
Abstract: PURPOSE: An organic light emitting device using bis(10-hydroxybenzoquinolinato)beryllium and bis(2-methyl-8-hydroxyquinolinato)beryllium mixture as a light emitting material and its preparation method are provided, to allow it to be driven at a low voltage and to improve the luminous efficiency and the brightness at a low voltage. CONSTITUTION: The organic light emitting device comprises at least one active layer on a substrate, and a light emitting layer which is one among the active layers comprises bis(10-hydroxybenzoquinolinato)beryllium and bis(2-methyl-8-hydroxyquinolinato)beryllium in the mass ratio of 1:5 to 5:1. Preferably the mass ratio is 3:1. The light emitting layer also acts as an electron transfer layer. The light emitting layer is prepared by depositing bis(10-hydroxybenzoquinolinato)beryllium and bis(2-methyl-8-hydroxyquinolinato)beryllium by organic molecular deposition.
Patent KR-20020068740-A (KR)
Title: Sensorless control apparatus for bldc motor
Inventor: HONG CHAN HUI
IPC: H02P6/08
Filed: 2001-02-22
Abstract: PURPOSE: A sensorless control apparatus is provided to ensure braking force without increasing DC link voltage during deceleration, while performing deceleration through the back-electromotive voltage caught at each phase of the motor. CONSTITUTION: A sensorless control apparatus comprises a speed/position calculation unit(7) for performing arithmetic operation to the current and voltage of each phase of the motor, performing arithmetic operation for a motor rotor position signal and the current motor speed signal, and outputting the result of operation by the control signal output from a deceleration judgement unit; a deceleration judging unit(10) for judging the decelerating state of the motor by the current motor speed output from the speed/position calculation unit, and outputting a control signal in accordance with the judgement; an adder(30) for taking, as an input, voltages of each phase of the motor, and adding the input voltage; a zero crossing detection unit(20) for detecting the zero voltage of the signal output from the adder, multiplying the cycle of the zero voltage with a predetermined constant, and outputting a position signal in accordance with the control signal output from the deceleration judging unit; and a speed calculation unit(50) for calculating the peak voltage of the signal output from the adder, and outputting a speed signal in accordance with the control signal output from the deceleration judging unit.
Patent KR-20020071323-A (KR)
Title: Methods for placing ads at the position in a certain distance from the objects in a monitor
Inventor: YU CHOON YEOL
IPC: G09F19/02
Filed: 2001-03-06
Abstract: PURPOSE: Provided is a method for advertisement at a certain distance from an object on a computer or TV screen, which perceives the motion or the position of the object like a person and inserts the advertisement at a fixed position from the object. CONSTITUTION: The advertisement is inserted at the position close to the most important part of the object by perceiving the object in a static image or a dynamic image. The advertisement position is changed according to the advertisement content. The advertisement uses proper colors and various forms such as text, graphics, a dynamic image, and etc.
Patent KR-20010067688-A (KR)
Inventor: KIM JONG HYUN
IPC: G07F17/40
Filed: 2001-03-07
Abstract: PURPOSE: A photography, image and display management system is provided to enable a customer to confirm a current position on a local area offered via a GIS server, to perform an advertisement or a PR on an LED or PDP display, to enable a customer to make an image phone by connecting an Internet phone to a CCD camera and to enable a customer to send a video e-mail or an instant photo data by connecting an Internet system to a video database server. CONSTITUTION: The system comprises a server(10), a communication controller(20), a photo system(30), an LED or PDP display(40), a colour printer(50) and a CCD camera(60). The communication controller(20) controls various signals. The photo system(30) includes a modem, a keyboard, a mouse, a CPU, a ROM, a display, a monitor, a sound card, a speaker, a printer port, a serial port and a LAN port. A customer accesses a photo system, and controls taking an instant photography, transmitting a video e-mail, doing an image chatting, making an Internet phone or searching a position in a map.
Patent KR-20020072874-A (KR)
Title: Method for forming fuse line opening portion of semiconductor device
Inventor: SUN HO WON
IPC: H01L21/82
Filed: 2001-03-13
Abstract: PURPOSE: A method for forming an opening part of a fuse line of a semiconductor device is provided to open stably the fuse line by forming a blocking layer on an interlayer dielectric and using the blocking layer as an etch stop layer. CONSTITUTION: A field oxide layer(102) is formed on a semiconductor substrate(100). A plurality of transistors including a source(104), a drain(104) and a gate electrode(112) are formed on a cell region and a peripheral region of the semiconductor substrate(100). The gate electrode(112) is formed with a gate oxide layer(106), a gate conductive layer(108), and a capping insulating layer(110). A spacer(114) is formed at a sidewall of the gate electrode(112). A contact pad(116) is formed on the source and drain region(104). The first interlayer dielectric(118) is formed on the semiconductor substrate(100). A contact plug(120) is formed thereon. The contact plug(120) is connected with the source and drain region(104) or the contact pad(116). A bit line(122) and a fuse line(124) are formed on the first interlayer dielectric(118). The second interlayer dielectric(132) is formed on a whole surface of the semiconductor substrate(100). A contact plug(134) is formed thereon. A capacitor(142) is formed on the on the second interlayer dielectric(132) and the contact plug(134). A blocking layer is formed on the second interlayer dielectric(132). The third interlayer dielectric(146) is formed on the whole surface of the semiconductor substrate(100). The first metallic line(146) is formed by an etch process. The fourth interlayer dielectric(150) is formed on the whole surface of the semiconductor substrate(100). A via hole(152) is formed by patterning the fourth interlayer dielectric(150). A via contact(154) and the second metallic line(156) are formed thereon. A passivation layer(158) is formed on the whole surface of the semiconductor substrate(100). The passivation layer(158) is removed from an opening part(149) of an upper portion of the fuse line(124).
Patent KR-20010095065-A (KR)
Title: Method and apparatus for manufacturing battery module and unit battery cell for use in battery module
Inventor: ODA TAKASHI
IPC: H01M50/528
Filed: 2001-03-29
Abstract: PURPOSE: A method for making battery module, its apparatus and a unit battery for battery module are provided, to weld a plurality of unit cells without damaging the unit cells and generating the welding inferior. CONSTITUTION: The method comprises the steps of arranging a pair of welding upper/lower electrodes(21, 23) in contact on the cases(16); aligning adjacent unit cells of a plurality of unit cells in a line; and passing a welding current between the pair of the welding upper electrodes(21, 23) from a welding power source while pressurizing both ends of the unit cells(10a, 10b, 10c) by using pressurizing members(31, 32) under a prescribed pressure. The Joule heat is generated at the contact portion between the bottom of the outer case(16) of the unit cell(10a) and the positive polarity terminal of the unit cell(10b) to melt the contact portion.
Patent KR-20020076507-A (KR)
Title: Air Bearing Spindle System for Micro-Drilling Using A Coated Lubricant
Inventor: BAE HYEON GYU
IPC: F16C32/06
Filed: 2001-03-29
Abstract: PURPOSE: A lubricant coating air spindle system for micro-drilling is provided to achieve improved stability of rotation of spindle and lengthen useful life of spindle by preventing abrasion at the shaft and bearing housing. CONSTITUTION: A lubricant coated air spindle system is characterized in that a lubricant(MoS2) is coated into a uniform thickness at an inner surface of an air bearing housing(3) and an outer surface of a rotating shaft. The air bearing housing and rotating shaft are processed by applying a predetermined pressure to the air bearing housing and the rotating shaft. Thus, abrasion caused due to the contact between the rotating shaft and the bearing housing is prevented, and an air friction heat is minimized, thereby stabilizing rotation of the air bearing.
Patent KR-20010095222-A (KR)
Title: Semiconductor device and its manufacture
Inventor: FUKUZUMI YOSHIAKI
IPC: H01L21/8242
Filed: 2001-04-02
Abstract: PURPOSE: To provide a low-priced semiconductor device having the high integration and the high reliability. CONSTITUTION: This semiconductor device has a substrate 1 containing a first region MC and a second region PC in a periphery thereof; an insulation film 21 formed on the second region PC; electrodes (17, 23) formed on a surface of the substrate 1 within the first region MC; a dielectric film 31 formed on the electrodes (17, 23); and an opposite electrode 35 formed on the dielectric film 31. A shape of a sidewall of the insulation film 21 contains a part reflecting a shape of an outer periphery of the sidewall of the opposite electrodes (17, 23).
Patent KR-20020077682-A (KR)
Title: Multi actuator
Inventor: SON YEON HO
IPC: H04R7/00
Filed: 2001-04-02
Abstract: PURPOSE: A multi-function actuator is provided to drastically improve a vibration characteristics by driving both of voice coil and a vibration generation coil during the generation of the vibration in comparison with a conventional actuator vibrated by only one coil. CONSTITUTION: A multi-function actuator includes a case(110) provided with a space therein, a vibration plate(101) fixed by coupling an external end of the vibration plate(101) to the upper portion of the case(110) for generating a voice, a voice coil(102) fixed by winding in a bottom surface of the vibration plate(101) in the form of cylinder, a magnet(104) magnetized in up and down direction, an upper plate(103) for forming a magnetic circuit by attaching to the magnet(104), a yoke(105) for forming the magnetic circuit together with the magnet(104), a weight(06) for forming a vibration body together with the magnet(104), the upper plate(103) and the yoke(105), a suspension spring(108) for supporting the vibration body and a coil(109) for generating a vibration by installing the lower surface of the case(110) and connected to the signal source and the voice coil(102) in parallel.