baber/WOPTO huggingface dataset:
Patent KR-20000075455-A (KR)
Title: 핸드라이팅 입력면이 일체로된 휴대용 전화 핸드셋
IPC: G06F3/041
Filed: 1999-12-31
Abstract: 핸드라이팅 입력면상의 손가락 또는 스타일러스에 의한 각 번호를 추적함으로써 사용자가 한 디지트씩 다이얼링될 숫자 디지트를 입력하도록 하는 핸드라이팅 입력면을 채용하는 휴대용 전화 핸드셋이 제공된다.
Patent KR-20000029806-A (KR)
Title: Long-acting drugs and pharmaceutical compositions comprising them
Inventor: FRIDKIN MATITYAHU
IPC: A61K47/48
Filed: 1997-08-05
Abstract: PURPOSE: Prod rugs and pharmaceutically acceptable salts thereof are provided which carry functional groups sensitive to mild bases and are capable of slowly hydrolyzing to the original active drug molecule under physiological conditions. CONSTITUTION: The prod rugs are preferably of the formula X-Y wherein Y is a moiety of a drug bearing at least one functional group selected from free amino, carboxyl, hydroxyl and/or mercapto, and X is a radical selected from radicals of formulas (i) to (iv) wherein R1 and R2, the same or different, are each hydrogen, alkyl, alkoxy, alkoxyalkyl, aryl, alkaryl, aralkyl, halogen, nitro, sulfo, amino, ammonium, carboxyl, PO3H2, or OPO3H2; R3 and R4, the same or different, are each hydrogen, alkyl or aryl; and A is a covalent bond when the radical is linked to a carboxyl or mercapto group of the drug Y, or A is OCO- when the radical is linked to an amino or hydroxyl group of Y. Examples of such prod rugs are those wherein Y is a moiety of insulin, human or bovine growth hormone, antibiotics, propanolol and others.
Patent KR-20000069292-A (KR)
Title: 엘리베이터의 운행관리 제어장치
IPC: B66B1/24
Filed: 1997-10-07
Abstract: 엘리베이터 이용자의 교통량을 구하기 위한 교통데이터를 수집하는 교통데이터 수집부와, 교통데이터 수집부에 의해 수집된 교통데이터에 따라 교통량을 산출하는 교통량 산출부와, 교통량 산출부에 의해 산출된 교통량에 따라 각층상간을 이동하는 엘리베이터 이용자의 교통류 추정치를 산출하는 교통류산출부와, 교통류 산출부에 의해 산출된 교통류 추정치에 따라, 엘리베이터의 운전을 제어하기 위한 제어 파라미터를 설정하는 제어 파라미터 설정부와, 제어파라미터 설정부에 의해 설정된 제어파라미터에 따라 엘리베이터의 운전제어를 하는 운전제어부를 구비하였으므로, 많은 교통류 패턴과, 이 교통류 패턴에서 얻어지는 교통량과의 조합을 미리 준비해서 기억할 필요가 없고 그때까지 관측된 교통량 데이터로부터 교통류 측정치를 즉시 산출해, 산출한 교통류 추정치에 따른 군관리 제어를 위한 제어파라미터를 설정해서 엘리베이터의 군관리 제어를 할수가 있다.
Patent KR-20000069561-A (KR)
Title: Use of flavylium type compounds non-substituted in position 3 for dyeing keratinous fibres and compositions containing them
IPC: A61K8/34
Filed: 1997-12-03
Abstract: The invention concerns the use of flavylium type compounds, non-substituted in position 3, and substituted by at least a hydroxyl or alcoxy radical, in particular Apigenidin, in pure form or in the form of plant extracts containing them, as coloring agent in or for making compositions for dyeing keratinous fibers, particularly human keratinous fibers such as hair. The invention also concerns the dyeing compositions containing them, particularly cosmetic compositions for direct hair dyeing, and the corresponding dyeing method. The hair dyes resulting from the use of these coloring agents are particularly stable to light and washing.
Patent KR-20000024055-A (KR)
Inventor: SON BYONG DUK
IPC: F02N11/08
Filed: 2000-01-17
Abstract: PURPOSE: A starter for an engine is provided to act an engine with operation unit in a vehicle. CONSTITUTION: A starter for an engine is made up of: a power feed unit(20); a first delay unit(30); a pulse converting unit(40); a second delay unit(60); and a starting unit(70). A driver needs not stop the engine with hands by automatically stopping the engine when a driver stops a vehicle according to the road traffic and easily starts the engine again by simply operating a clutch or a transmission.
Patent KR-20010076663-A (KR)
Title: Treatment of waste water produced during process for preparing melamine
Inventor: CHO YEONG SANG
IPC: C02F1/52
Filed: 2000-01-27
Abstract: PURPOSE: A treatment method of wastewater discharged during melamine preparing process is provided to facilitate design and engineering of wastewater treatment system and improve economical efficiency by using inexpensive additives and generating few byproducts. CONSTITUTION: Ammonia is removed from wastewater by aeration under an alkaline condition. Organic pollutants in the wastewater are coagulated by using aluminum sulfate cohesive agent under an acidic condition. Then, the organic pollutants are settled. For the aluminum sulfate cohesive agent, aluminum sulfate, alum or mixture thereof can be used. The treated wastewater may be neutralized using caustic lime.
Patent KR-20000024310-A (KR)
Inventor: KIM DAE IN
IPC: E01D22/00
Filed: 2000-02-03
Abstract: PURPOSE: A construction method of concrete slab is provided to construct the concrete slab without a mold in the construction field of a bridge by constructing concrete and PC(Pre-cast Concrete) when constructing a girder plus concrete slab bridge. CONSTITUTION: A construction method of concrete slab contains the steps of: installing a girder, dividing a concrete slab as the thickness of the slab up and down, manufacturing the lower part with PC plank, carrying to a position of a bridge, installing on the girder, distributing bars, and installing the upper part of the slab. This method is safe and economic due to unnecessary molding work in a high place and prevents an eruption accident while installing concrete.
Patent KR-20010077716-A (KR)
Title: Method and apparatus for reducing noise occurred at demagnetization of image display device
Inventor: HA YONG HAE
IPC: H04N9/29
Filed: 2000-02-08
Abstract: PURPOSE: A device and a method for decreasing noise in the time of releasing a magnetization of a display device are provided to decrease a rejection feeling about the noise by generating an audio signal bigger than noise generated in the time of releasing the magnetization through addition of an audio generation device. CONSTITUTION: A device for decreasing noise in the time of releasing a magnetization of a display device includes a sound generating part(5), a speaker(6), and a magnetization release processing device including a key input part(1), a micom(2), a memory part(3), and a magnetization release processing part(4). The key input part(1) includes a magnetization release key. The micom(2) performs a pertinent control function by recognizing an output signal of the key input part(1). The memory part(3) stores the control information of the micom(2) and information for initiation. The magnetization release processing part(4) is driven by the control signal of the micom(2), and performs a magnetization release operation. The sound generating part(5) generates an electric audio signal in order to decrease the noise generated in the time of releasing the magnetization. The speaker(6) converts the electric audio signal into an audio signal. Namely, when the sound generating part(5) is driven, at the same time, the magnetization release processing part(4) is driven by the micom(2), and a rejection feeling of a user is decreased by generating a sound for enough time.
Patent KR-20010076123-A (KR)
Title: Progressive color processing apparatus
Inventor: KANG CHEOL HUI
IPC: H04N9/64
Filed: 2000-02-15
Abstract: PURPOSE: A device for processing color improvement is provided to supply with a good quality of color image by compensating for an attenuated high band part of a chromaticity component due to a synthetic low pass filtering specificity in case of a playback of compressed image. CONSTITUTION: A color space convertor(310) converts an RGB digital signal of three original colors to a color space(YoCboCro) 4:2:0 format. An encoder(320) encodes the output signal(YoCboCro) of the color space convertor(310) and outputs a luminance signal(Yc) and a chromaticity signal(CbcCrc) about a color. A decoder(330) decodes the output signal(YcCbcCrc) of the encoder(320) and outputs a color space signal(YCbCr). A color space convertor(340) converts the output signal(YCbCr) of the decoder(330) into the RGB digital signal of three original colors. A color improvement block(350) outputs a digital signal compensating for decoloration of a high band part in application of a color improvement technique.
Patent KR-20010085150-A (KR)
Inventor: JU YEONG BAE
IPC: H04N21/438
Filed: 2000-02-29
Abstract: PURPOSE: A distributed Internet broadcasting system is provided to enable any user to broadcast contents, authored by himself or herself, over the Internet without other broadcasting equipments. CONSTITUTION: The system comprises a producer client(101), a broadcasting server(100), and a viewer client(102). The producer client(101) includes a raw display image capture module, a video encoder, and a transmitter. The raw display image capture module captures all the video screens executed in a real player or a media player. The video encoder codes the captured video data. The viewer client(102) includes a receiver, a video decoder, an audio decoder, a monitor, and a speaker. The receiver receives compressed video stream. The decoder decodes the video stream and displays the video on the monitor. The server includes a connection controller, a distribution main server processor, a distribution sub server processor, a receiver and a transmitter. The compressed stream is transmitted to the distribution main server processor via the receiver. The connection controller checks if the stream is effective, and controls the distribution main server processor. The distribution main server processor counts the number of the accessing viewer clients(102), and allocates the viewer clients(102) to the sub server processor.
Patent KR-20000036381-A (KR)
Inventor: HWANG MOON DO
IPC: G06K19/04
Filed: 2000-02-29
Abstract: PURPOSE: A multidirectional connection method of the non volatile memory card is provided to make the card bidirectionally get inserted into a card socket of an electronic device so that it increase a user friendliness. CONSTITUTION: A multidirectional connection method of the non volatile memory card includes steps of making an upward end shape point-symmetrically with a downward end shape, and forming grooves for preventing the non volatile memory card from separating from an electronic device.
Patent KR-20010091075-A (KR)
Title: Method for wedding dress simulation system by using computer
Inventor: MOON YOUNG SHIK
IPC: G06F17/50
Filed: 2000-03-13
Abstract: PURPOSE: A method for configuring a computerized customized wedding dress providing system is provided to enable a customer to easily select a wanted dress on the spot and manage the customer's image and contract information at low cost. CONSTITUTION: A new customer information is inputted in a customer management program(S7). A customer image sequence is stored in an image buffer within a PC by pressing a camcorder button of a wedding shop program and using an image grabber, and the image in the image buffer is output on a monitor through an on-timer routine(S8). The on-timer routine is stopped by pressing a capture button of the wedding shop program, and the customer image stored in the image buffer is stored in a hard disk within the PC(S9). The customer image is obtained(S10). A dress is customized(S20). Color of the dress, base material, and background color are changed(S30). The customer's dress image in the image buffer is stored in a hard disk or a database, and the customer information is stored in the database(S31).
Patent KR-20000071458-A (KR)
IPC: G02F1/1368
Filed: 2000-03-18
Abstract: 주사선 구동 회로나 영상 신호선 구동 회로에 포함되는 CMOS 버퍼의 소비 전력을 낮게 억제하려고 하기 위한 것으로, 주사선과 주사선에 직교하는 영상 신호선에 스위칭 소자가 접속된 액티브 매트릭스형 액정 표시 소자를 포함하고, 주사선을 통해 스위칭 소자에 주사 펄스를 인가하는 주사선 구동 회로 및 영상 신호선에 영상 신호를 인가하는 영상 신호선 구동 회로 중 적어도 하나가, N형 박막 트랜지스터와 P형 박막 트랜지스터를 동일 기판 상에 형성한 1단의 CMOS 버퍼 또는 다단으로 접속한 복수의 CMOS 버퍼로 구성된 디지털 회로를 포함할 때, CMOS 버퍼를 구성하는 N형 박막 트랜지스터 및 P형 박막 트랜지스터 중 회로 동작중에 오프 상태가 되는 시간이 긴 한쪽 트랜지스터의 게이트 길이를 다른 트랜지스터의 게이트 길이보다 길게 형성한 것을 특징으로 한다.
Patent KR-20010092184-A (KR)
Inventor: PARK DU JIN
IPC: H01F5/06
Filed: 2000-03-21
Abstract: PURPOSE: An insulation structure and insulation method for coiled products is provided to reduce assembly procedure and manufacturing cost by forming an insulation member through an injection molding. CONSTITUTION: An insulation structure comprises one or more fixing members(20) arranged to a coiled product(10); and an insulation member(30) which is formed of an insulation resin through an injection-molding at the outer surface of the coiled product including the fixing member. An insulation method comprises the first step of forming a fixing member to be fixed to the bottom portion of the coiled product; the second step of inserting and coupling the coiled product into the fixing member; and the third step of injecting the coiled product coupled with the fixing member into the injection mold, and forming an insulation member at the outer surface of the coiled product.
Patent KR-20000036734-A (KR)
Inventor: JUNG SUNG HEE
IPC: G06Q30/02
Filed: 2000-03-27
Abstract: PURPOSE: An internet slot game using the banner advertising of the web browser and the game method are provided to maximize the effect of advertising by applying the goods advertisement of an internet web dedicated browser to the desktop of a slot machine game. CONSTITUTION: If a server(13) calls the banner data(14) of a game machine and outputs the stored banners(15), a user selects them arbitrarily(16). It is compared whether an identical banner is selected among the selected banners(17). In case that an identical banner is not selected doubly, it is compared whether n nos. opportunity banners to be fixed are all set up(18). If all are selected, items selected by the user are stored in the user game data(19) so as to be applied simultaneously with the execution of the game machine(20).
Patent KR-20010095403-A (KR)
Title: Producing method of bleaching washing soap made of mung beans
Inventor: LEE SEUNG HWA
IPC: C11D13/00
Filed: 2000-03-30
Abstract: PURPOSE: Provided is a process for producing mung-bean bleaching laundry soap by using a saponified component of pure waste oil, which is excellent in washing ability, whitening effect, and sterilizing effect. CONSTITUTION: The mung-bean bleaching laundry soap is produced by a process comprising the steps of: refining the waste oil in a waste oil refining tank(1); storing the refined waste oil in raw material storing tanks(A, B, C, D); mixing 70-80% of refined waste oil and 18% of liquid caustic soda and saponifying in a saponification tank(3); stirring the saponified component, 4% of soda ash, 1% of silica soda, 2% of soda hypochlorite, 0.04% of a blue-jade color pigment, and 0.04% of a fluorescent dye for 2 hours in a blending tank(4); cooling in a cooler(6) and extruding in an extruder(7-1); cutting and stamping the brand name in a mold(8); drying in a dryer(9) and packing.
Patent KR-20010095469-A (KR)
Title: Processing of flaxseed
Inventor: MILLIMAKI OLABI
IPC: A23N5/00
Filed: 2000-03-30
Abstract: PURPOSE: A method for processing flaxseed containing removing the hulls from a seed core of flaxseed and separating the outer and inner part of the hulls into a mucilage fraction and a fiber fraction respectively is provided. Whereby a food enhancer having a little influence on a taste and flavor of foodstuffs is produced. CONSTITUTION: The hulls of flaxseed are removed from a seed core by grinding. The outer part of hulls removed firstly is separated into a mucilage fraction, while the inner part thereof is separated into a fiber fraction containing large amount of lignans. The separated mucilage fraction occupies 3 to 10% by weight of seed weight and the separated fiber fraction occupies 20 to 70% by weight thereof. In addition, oil is separated from the fiber fraction by extraction and a protein part and a hydrocarbon part of the seed core are separated from the residues remaining after oil separation.
Patent KR-20000036973-A (KR)
Inventor: LEE SANG CHEON
Filed: 2000-04-03
Abstract: PURPOSE: An image transaction method is provided to achieve the survey, consulting and contract of goods with watching and talking each other on the image using the internet, without the necessity of visiting an office. CONSTITUTION: A space to introduce a company briefly, a space to guide member joining and a member joining procedure are so explained that a member can join. A search space secures spaces for search by each condition, an offerings list by each condition, detail offerings information view, motion picture sales inquiry, image consulting and member information view. A member square comprises spaces for offerings registration, registration by each condition, motion picture registration and individual offering view. A information square is composed of spaces for a free talking bulletin board and question & answer.
Patent KR-20000071584-A (KR)
Title: 개선된 정렬 마크 패턴, 오버레이 정밀도 측정 패턴 및 그형성 방법
IPC: H01L21/027
Filed: 2000-04-07
Abstract: 본 발명은 오버레이 정밀도를 측정하기 위한 패턴을 제공하며, 상기 패턴은 절연층 내에 형성된 홀을 포함하며, 상기 홀의 하부는 절연층에 대한 에칭 스토퍼의 상부면을 포함한다.
Patent KR-20010095642-A (KR)
Title: Method for preparing lithium trivandate with improved electrochemical performance and lithium battery using the same
Inventor: JUNG JAE SIK
IPC: H01M4/48
Filed: 2000-04-11
Abstract: PURPOSE: A method for preparing lithium vanadium complex oxide with the improved electrochemical property and a lithium secondary battery using the oxide are provided, to improve the capacity, lifetime and uniformity of the oxide powder used as an active material of a cathode of a lithium secondary battery. CONSTITUTION: The method comprises the steps of adding LiOH and V2O5 by the mol ratio of 2.0-2.5 : 3 to water and mixing them with stirring to prepare a lithium vanadium oxide powder solution; washing the lithium vanadium oxide powder solution with water to remove the unreacted one by the precipitation method; freeze-drying the lithium vanadium oxide powder solution; and heating the dried lithium vanadium oxide powder under air atmosphere. Preferably the mixing is carried out at a temperature of 50-60 deg.C, and the heating is carried out at a temperature of 200-350 deg.C. Preferably the cylindrical lithium secondary battery comprises a cathode(6), a separator membrane(5), an anode(4), wherein a separator membrane(5), and the electrodes and the separator membranes are joined into one body by heat.
Patent KR-20000053929-A (KR)
Inventor: OM JAE PUNG
IPC: A47B67/00
Filed: 2000-05-03
Abstract: PURPOSE: A dressing table with refrigerator is provided which keeps the cosmetics cool and can be used conveniently because it is not necessary for user to use another mirror. CONSTITUTION: A dressing table with refrigerator is characterized by being comprised of: a door(10) having a packing(11) and a mirror(10) installed more closely to the users; a heat absorbing board(14) installed onto the end of an N-typed semiconductor(15) and a P-typed semiconductor(21) protruded into the inside of the body; and a radiating board(18, 20) installed on the end of an N-typed semiconductor(15) and a P-typed semiconductor(21) protruded into the outside of the body.
Patent KR-20000077308-A (KR)
Title: 플라즈마 생성장치 및 반도체 제조방법
IPC: C23F4/00
Filed: 2000-05-17
Abstract: 본 발명은 장방형 전극을 갖는 플라즈마 생성장치에 있어서 플라즈마 생성영역의 중앙부에서도 고밀도의 플라즈마를 생성할 수 있도록 한 플라즈마 생성장치 및 반도체 제조방법에 관한 것이다. 진공용기(11)는 평단면 장방형을 하고 있다. 방전용 전극(14)은 장방형 통형상이고 장방형 진공용기(11)의 일부를 구성하고 있으며, 플라즈마 생성영역(41)을 감싸도록 배치 및 설치되어 있다. 방전용 전극(14)을 감싸도록 설치한 장방형 영구자석(15, 16)은 소정의 자력선(43)을 형성한다. 이 자력선(43)은 방전용 전극(14)의 중심축(42)과 거의 평행한 부분을 가지며, 이 평행한 부분의 길이가 중심축(42)에 가까울 정도로 길어진다. 한 쌍의 평행평탄한 전극(17, 18)은 장방형을 하고 있으며, 방전용 전극(14)의 중심축(42) 방향에 있어서의 플라즈마 생성영역(41)의 범위를 규정한다. 이러한 한 쌍의 전극(17, 18)은 플라즈마 생성영역(41)을 상기 중심축(42) 방향으로부터 끼워지도록 설치 및 배치되어 있다. 또한, 플라즈마 생성장치는 플라즈마 생성영역(41)의 중앙부를 통과하는 자력선(43)이 한 쌍의 전극(17, 18)과 교차하지 않는 것 같은 형상을 갖도록 구성되어 있다.
Patent KR-20010049398-A (KR)
Inventor: LEE CHEOL JIN
IPC: C01B31/02
Filed: 2000-05-24
Abstract: PURPOSE: A method for preparing a carbon nanotube by using a low pressure chemical vapor deposition method is provided which mass-produces the carbon nanotubes vertically aligned on a base plate with high purity and easily controls the diameter and the length of the carbon nanotube. CONSTITUTION: The method comprises steps of: (i) forming a catalytic metal film on a base plate; (ii) etching the catalytic metal film with etching gas to form plural catalyst particles; and (iii) synthesizing carbon nanotube on the catalytic particles by a low pressure chemical vapor deposition method with supplying carbon source gas to the plural catalytic particles formed base plate.
Patent KR-20000077470-A (KR)
Title: 베이직팩터를 이용한 발전기능을 갖는 전동기
IPC: H02K37/10
Filed: 2000-05-27
Abstract: 에너지 효율이 개선되고, 실용성이 뛰어나고, 또한 발전기의 기능을 함께 갖는 전동기를 제공하기 위해서, 베이직팩터를 이용한 전동기는 양측에 작용면(55a, 55c)을 갖춘 베이직팩터(15)와 상기 작용면에 대향해서 설치된 자성체로 이루어진 가동부재(57)을 갖추고 있다. 상기 베이직팩터(15)는 전자석부(17)과 그 양측에 접촉면을 통하여 배치된 영구자석부(19)를 갖고, 상기 작용면과 상기 접촉면은 상기 영구자석부(19)를 통하여 대향하고 있다.
Patent KR-20010109565-A (KR)
Inventor: KIM HYEON JEONG
Filed: 2000-05-30
Abstract: 본 발명은 전자레인지에 관한 것으로서, 도파관의 형상을 개선하여 고온으로 가열된 도파관의 내부를 냉각하여 전자레인지의 신뢰성을 향상시키기 위한 것이다. 
     이를 위해 본 발명의 전자레인지는 조리공간인 캐비티(cavity)와, 상기 캐비티 일측에 전자파를 발생하는 안테나가 구비된 마그네트론과, 상기 마그네트론 일측 방향에 송풍팬과, 상기 캐비티와 마그네트론 사이에 위치하여, 상기 전자파를 캐비티 내부로 안내ㆍ방사하며, 내부에서 발생되는 열을 냉각하기 위한 냉각수단이 구비된 도파관을 포함하여 제공된다.
Patent KR-20010111682-A (KR)
Title: 리튬 이차 전지의 제조방법
Inventor: HONG JI JUN
IPC: H01M50/463
Filed: 2000-06-12
Abstract: 본 발명은 리튬 이차 전지의 제조방법에 관한 것으로, 보다 상세하게는 (1) 전극을 절연하는 격리막을 로울러에 의해 권출하는 단계; (2) 상기 격리막 양면의 음극판 및 양극판이 부착되는 위치에 에어 인젝터 (air injector)를 이용하여 접착제를 도포하는 단계; (3) 상기 격리막의 양면에 각각 음극판 및 양극판을 일정간격으로 접착하는 단계; (4) 상기 접착된 음극판 및 양극판을 라미네이션(lamination)시키는 단계; 및 (5) 상기 음극판 및 양극판이 부착된 격리막을 음극판과 양극판이 서로 교호되도록 적층하는 단계를 포함하는 리튬 이차 전지의 제조방법에 관한 것으로 본 발명의 방법에 의하여 보다 빠르고 효율좋게 리튬 이차전지를 생산할 수 있다.
Patent KR-20000054682-A (KR)
Inventor: HEO WON
IPC: G06Q50/20
Filed: 2000-06-17
Abstract: PURPOSE: A test problem providing service method using a communication is provided for implementing a repeated studying effect by repeatedly providing a test problem to a studying person by simply changing an arranged sequence of a sentence or a parameter with respect to the same studying content. CONSTITUTION: A studying person operates a user terminal(20) and is connected with a test problem service computer(10) on an information communication network(N). Configuration files of a web page which provides a studying content in the test problem service computer(10) are downloaded to a connected user terminal(20), and a main screen of the studying web page provided in the test problem service computer(10) is displayed on the screen of the user terminal(20).
Patent KR-20020000423-A (KR)
Title: Actuator of inkjet print head and manufacturing method thereof
Inventor: JANG GWANG GYUN
IPC: B41J2/235
Filed: 2000-06-26
Abstract: PURPOSE: An actuator of an ink jet printer head and a manufacturing method thereof are provided to improve performance by driving cells evenly with placing a contact protrusion in a same central line with a chamber, and to operate a piezoelectric element precisely by checking arrangement of the piezoelectric element and the chamber simply. CONSTITUTION: An actuator of an ink jet printer head is composed of a chamber plate(10) having elongated chambers(11); a vibrating plate(20) mounted at a side of the chamber plate; a contact protrusion(30) integrally protruded in the vibrating plate arranged in a same central line with the chamber; and a piezoelectric driving unit(40) mounted in the contact protrusion. Driving force of the vibrating plate is increased stably with placing the vibrating plate and the piezoelectric driving unit in the same central line with the chamber. The part of the vibrating plate contacted to the piezoelectric driving unit is formed to be thick, and placed in a line with the chamber. Performance of the vibrating plate is improved evenly with contacting the vibrating plate to the piezoelectric element optimally.