baber/WOPTO huggingface dataset:
Patent KR-20060047397-A (KR)
Inventor: NISHIWAKI SEIJI
IPC: G11B7/135
Filed: 2005-04-22
Abstract: 큰 복굴절을 갖는 광디스크 기재에 대해서도, 검출 광량이 영(zero)으로 되지 않고, 신호의 판독 오류나 광디스크의 제어가 적확하게 행하여지는 광디스크 장치를 제공한다. 
     본 발명의 광디스크 장치는, 광을 방사하는 광원, 광을 광디스크의 신호면에 수속시키는 대물 렌즈, 광디스크에서 반사된 광을 회절하는 편광성 광분기기, 편광성 광분기기에 의해서 회절된 광을 검출하는 광 검출기, 및 광디스크와 편광성 광분기기 사이에 배치된 파장판을 구비한다.  파장판은 동일한 입사 직선 편광에 발생시키는 복굴절 위상차가 서로 다른 제 1 및 제 2 영역을 포함하는 2차원적으로 배열된 복수의 복굴절 영역을 구비하며, 제 1 및 제 2 영역을 포함하는 복수의 복굴절 영역은 광의 입사 위치에 따라 서로 다른 위상차를 상기 광에 발생시킨다.
Patent KR-20070087705-A (KR)
Title: Reinforcement steel cover on graduation album
Inventor: GANG JONG LEA
IPC: B42D1/08
Filed: 2005-05-04
Abstract: A graduation album combined with a metal back cover is provided to secure semi-permanent preservation by increasing durability and to protect and reinforce the fragile edges. In a graduation album formed by binding thick covers(100) to the outside of leaves printed with pictures, a metal back cover(10) is combined and integrally fixed on the back surface of the cover to cover the back and a folding part(150) of the back cover. The back cover comprises a back cover surface(11) covering the back and the folding part and folding part cover surfaces(12) bent at both sides. Windows(13a,13b,13) for showing words are formed on the back of the back cover surface. An engaging sill engaged with the back cover with pressing the back cover after bookbinding is formed on the folding part cover surfaces.
Patent KR-20060117511-A (KR)
Title: Method for fabricating interlayer dielectric in semiconductor device
Inventor: CHO HAN WOO
IPC: H01L21/31
Filed: 2005-05-11
Abstract: A method for forming an interlayer dielectric of a semiconductor device is provided to remove metallic contaminants and to keep the concentration of impurities in the interlayer dielectric in a predetermined range by using two-step cleaning processes. An interlayer dielectric(810) is formed on a semiconductor substrate. A first cleaning process is performed on the resultant structure to remove metallic contaminants from the interlayer dielectric. A second cleaning process is then performed on the resultant structure to remove a degraded portion of the interlayer dielectric in an impurity concentration due to the first cleaning process therefrom. The interlayer dielectric is made of BPSG(Boron Phosphorous Silicate Glass).
Patent KR-20060118906-A (KR)
Title: Warer-repellent coating composition containing surface-modified nano particles and method for forming a coating layer with a contrilled transparency and contact angle using the composition
Inventor: KIM SUN YOUNG
IPC: C09D183/04
Filed: 2005-05-17
Abstract: Provided are an organic silane-based water-repellent coating composition, which has storage stability without causing precipitation of particles, and a method for forming a coating layer using the same, which controls transparency and contact angle of a coating film on water. The organic silane-based water-repellent coating composition contains surface-modified nano particles. The coating composition comprises: a reaction product obtained by dissolving at least one organic silane compound selected from the group consisting of alkoxysilane and alkyl alkoxysilane defined by the following formula 1 in 0.1 to 20-fold organic solvent based on the total weight of the organic silane compound, and adding an acidic or basic catalyst and water to the resultant solution to subject the organic silane compound to hydrolysis and condensation polymerization; and an organic solvent used as a diluent in an amount equivalent to 0.1-1000 times total weight of the reaction product. The organic silane-based surface-modified nano particles are obtained by surface-modifying an organic silane compound selected from the group consisting of alkoxysilane and alkyl alkoxysilane defined by the formula 1. The nano particles are contained in an amount of 1-90wt% based on solid weight of the total coating composition. In the formula 1, x is an integer of 1-4, R^1 is a C1-12 alkyl group, a C3-10 cycloalkyl group, a C6-15 aryl group, a C1-12 alkyl group with an unsaturated hydrocarbon bonding, or an alkyl group substituted with a fluoro atom, and R^2 represents a hydrogen atom or a C1-4 alkyl group.
Patent KR-20060119287-A (KR)
Title: Wibro service system using optical repeater
Inventor: SHIN YONG HO
IPC: H04B10/291
Filed: 2005-05-19
Abstract: A WiBro(Wireless Broadband) service system using an optical repeater is provided to supply a signal transceiving service by only using the optical repeater without making a WiBro RAS(Radio Access Station) directly provide the service, thereby simply resolving a signal delivery delay difference between optical repeaters. An RAS(100) comprises the followings. A modem chip conducts modulation/demodulation for forward and reverse signals. A D/A(Digital to Analog) converter(104) converts a forward digital signal into an analog signal. An up frequency converter(106) converts an analog signal into an RF(Radio Frequency) signal to send the converted signal to an optical repeater donor module(200). Down frequency converters(110,111) convert signals received from the donor module(200) into IF(Intermediate Frequency) signals. A/D(Analog to Digital) converters(108,109) convert the IF signals into digital signals. The donor module(200) comprises as follows. A forward RF unit(202) amplifies or attenuates the RF signal so as to have a designated signal level. An O/E converter(206) performs conversion between the RF signal and an optical signal. Reverse RF units(204,205) amplify or attenuate a reverse RF signal incoming from the O/E converter(206) so as to have a designated signal level to send the amplified or attenuated signal to the down frequency converters(110,111).
Patent KR-20060122066-A (KR)
Title: Plasma display device
Inventor: PARK JONG DOO
IPC: H01J11/46
Filed: 2005-05-25
Abstract: A plasma display apparatus is provided to block transmission of electromagnetic wave and to prevent a mis-operation of a neighboring driving circuit due to electromagnetic wave interference by employing a filter circuit around a PCB(Printed Circuit Board) and a connecting member and a filter member at a center of the connecting member. Plural PCBs(Printed Circuit Board)(12) supply a driving signal to a plasma display panel(4). A connecting member(14) connects respective PCBs. A filter member(15) is installed around the connecting member to block electromagnetic wave transmitted by passing through the connecting member from the PCB. The connecting member passes through the filter member. Plural filter devices are formed around a connecting part of the connecting member and the PCB to filter the electromagnetic wave transmitted from the PCB to the connecting member.
Patent KR-20060122090-A (KR)
Title: Rice formed by fiber not having dissociation
Inventor: KIM KYUNG TAE
IPC: A23L1/18
Filed: 2005-05-25
Abstract: Provided is an artificial fiber rice, which maintains the same chewiness as rice when steamed, provides a sweet taste upon chewing, has no dissociation property, and prevents constipation and adult diseases. The artificial fiber rice having no dissociation property is prepared by the steps of: mixing 65-80wt% of insoluble cellulose, 5-15wt% of sea tangle powder, 5-10wt% of xylitol or oligosaccharide, and 9-15wt% of water to be kneaded; charging the mixture into a general artificial rice molding apparatus to be formed in rice shape; and polishing the obtained artificial rice in a hulling and polishing apparatus.
Patent KR-20060046257-A (KR)
Inventor: IKUTA KAZUO
IPC: H01L21/60
Filed: 2005-05-30
Abstract: 검사의 신뢰성 및 제품의 품질에 대한 신뢰성을 높일 수 있는 도체 패턴의 전기검사용 전처리 방법, 도체 패턴의 전기검사 방법, 도체 패턴의 전기검사용 전처리 장치, 도체 패턴의 전기검사 장치, 검사완료 프린트 배선판, 및 검사완료 반도체 장치를 제공한다.   
     프린트 배선판용 절연기판의 적어도 편면에 설치된 도체 패턴을 각 피스 마다 전기검사 하기 위한 전처리에 관한 것으로서, 도체 패턴을 각 피스 마다 검사하여 불량 도체패턴을 검출하고, 불량 도체패턴이 검출된 불량 피스에 대해서 불량 도체패턴을 구성하는 배선 사이를 단락시키도록 도전성 물질을 부여한다.   
       
     도체 패턴, 전기검사용 전처리 방법, 전기검사 방법, 검사완료 프린트 배선판, 절연기판, 불량 도체패턴
Patent KR-20060125342-A (KR)
Title: Soundproof fence
Inventor: SHIM HYEN SEB
IPC: E04G21/32
Filed: 2005-06-02
Abstract: A soundproof fence is provided to maximize a soundproofing effect using a sound absorbing plate with honeycomb sound absorbing spaces, to prevent the distortion, transformation and breakdown of a fence against external impact and to have excellent durability against impact and corrosion by making a front plate and a rear plate with plastics. A soundproof fence contains: a front plate(110) and a rear plate(120) installed at the fixed interval and made of plastics to bear external impact and not to corrode away by salt or moisture; and a sound absorbing plate(130) installed in the honeycomb structure between the front plate and the rear plate to prevent the distortion of a fence against external physical impact and provided with honeycomb sound absorbing spaces(131) to disperse and absorb the noise transferred through the front plate and the rear plate.
Patent KR-20060133712-A (KR)
Title: Tool hanger device
Inventor: SEO OWI SEONG
IPC: B25H3/04
Filed: 2005-06-21
Abstract: A working tool hanger device is provided to separate a tool hanging unit from a tool hanging hole easily by guiding and turning the tool hanging unit along the inside of the tool hanging hole, and to prevent breakage by restricting a connecting piece from being turned freely in a narrow part of the tool hanging hole. A working tool hanger device is formed by assembling a tool hanging plate(40) having tool hanging holes with a tool hanging unit with a rod. The tool hanging hole includes a wide part(44) having both curved surfaces, and a narrow part communicated with a lower part of the wide part. A fitting cam(50) and a fitting member(52) are arranged at both sides of the tool hanging plate and formed at a side of the tool hanging unit. A connecting piece(54) is connected between the fitting cam and the fitting member, and a fitting unit is inserted in moving the connecting piece to the narrow part. A guide projection(58) is protruded at the end of the fitting cam, guided along the curved surface of the wide part and turned to easily release the fitting cam from the tool hanging hole. A side of the connecting piece is arranged in a line with the side of the fitting cap, and the fitting unit is formed around the connecting piece.
Patent KR-20060134746-A (KR)
Title: Method for unifying service in telematics terminal
Inventor: LEE SANG SOOK
IPC: G06F19/00
Filed: 2005-06-23
Abstract: A method for integrating services of a telematics terminal is provided to promptly offer the telematics service with button selection in a webpage by integrating an Internet service and the telematics service. A URL(Uniform Resource Locator) linked to the webpage selected by a user in a web browser is parsed. If a terminal link protocol is found in the URL, the web browser informs an Internet application of the telematics service. The Internet application extracts data of the terminal link protocol and requests a telematics search application to execute the telematics service. The telematics service application executes the requested telematics service. The telematics service comprises various kinds of mobile services such as a calling, navigation, and file download service. The terminal link protocol is linked to the URL with a character string, orders link for the telematics service discriminated by the character string, and provides the data requested from the telematics service.
Patent KR-20070007585-A (KR)
Title: Light emitting device employing nanowire phosphors
Inventor: KIM HWA MOK
IPC: H01L33/50
Filed: 2005-07-11
Abstract: A light emitting device using a nano-wire phosphor is provided to increase the efficiency of a light emitting device by reducing optical loss caused by non-illuminant re-combination. A light emitting diode(13) emits light with a first wavelength, having a main peak in at least one of an ultraviolet wavelength scope, a blue light wavelength scope and a green light wavelength scope. At least a part of the light with the first wavelength emitted from the light emitting diode is transformed into light with a second wavelength greater than the first wavelength. The light emitting diode is covered with resin. A nano-wire phosphor(20) is a light emitting device(10) dispersed in the resin.
Patent KR-20070008916-A (KR)
Title: Environment-frinedly of bridge superstructure and the masonry construction
Inventor: PARK GILL SIK
IPC: E01D21/00
Filed: 2005-07-12
Abstract: An eco-friendly method of constructing an upper structure of a bridge and a manufacturing method thereof are provided to reduce noise at the seaside and to minimize the damaged area of the tideland by mounting the pulling-up unit having a frame and plural lifting units. An eco-friendly method of constructing an upper structure of a bridge comprises the steps of: preparing for two moving vehicles(100); installing an inch jack at the upper side of the bridge(200); installing pulling-up units at the upper part of the vehicles(300); placing the upper structure between the pulling-up units(400); moving the two vehicles to the side between the bridges(500); combining the position of the lower surface of the upper structure and the upper surface of the shoe apparatus(600); placing the upper structure at the upper part of the shoe apparatus(700); and removing the inch jack(800).
Patent KR-20070008926-A (KR)
Title: Earthquake-block, earthquake-proof wall useing earthquake-block and construction method
Inventor: KIM SANG CHO
IPC: E04B2/02
Filed: 2005-07-12
Abstract: An earthquake-proof brick, and an earthquake-proof wall using the same, and a constructing method thereof are provided to secure the combining force between a brick and a filler by injecting the fiber reinforcing agent between the brick and the filler and to improve the shear reinforcement by placing the earthquake-proof pad. An earthquake-proof brick(10) is composed of grooves(12) formed at the upper and lower surfaces; and a filler filled in the grooves to be hardened and to be structurally engaged. The inside of the groove is large, and the groove is vertically and horizontally long. A fiber reinforcing agent(14) is formed inside, and the ends of the fiber reinforcing agent are projected to the outside of the brick. A filler is filled between the bricks and hardened after filling the grooves.
Patent KR-20050082162-A (KR)
Inventor: GO WON SIM
IPC: A23L17/00
Filed: 2005-07-16
Abstract: 본 발명은 전복과 삼겹살 묵은김치를 돌판위에 동시에 구어 시식하는 전복삼합조리방법에 관한 것이다. 
     최근 생산과잉이 되고 있는 전복양식 농가의 전복소비 저변확대를 위하고 서민들의 대중적인 요리식으로 제공코자 개발한 것이다. 
     통상 전복은 고가로 보양식으로 전복죽등으로 조리하거나, 무침, 기타 익혀 먹는것이 대부분이나, 삽겹살과 묵은김치를 곁들여 1인당 20,000원대로 전복과 삼결살과 묵은김치가 어울어진 특유의 전복삼합조리식과 전복내장회무침까지 시식할 수 있는 조리방법을 제공하고자한 발명으로, 전복과 삼겹살을 적절한 두께로 썰어 묵은김치와 함께 돌판위에서 구어내, 묵은김치에 삼겹살을 올린후 맨위에 전복을 올려 시식했을때, 묵은김치의 양념분이 스민 상태로 고소한 삼겹살의 맛과 전복의 담백한 맛과 어울러진 전복삼합특유의 맛을 즐길 수 있도록 한 유용한 발명인 것이다.
Patent KR-20060053928-A (KR)
Inventor: PARK BYOUNG SOO
IPC: G08B25/10
Filed: 2005-07-20
Abstract: 본 발명은 시큐어리티 시스템 및 방법에 관한 것으로, 특히 인터넷을 통한 공동주택의 시큐어리티 시스템 및 방법에 관한 것이다. 공동주택의 각 세대에 설치된 서브 컨트롤러는 센서에 연결되어 상기 센서에 의한 이상현상 감지시 이상신호를 발생하여 메인 컨트롤러로 전달하고, 상기 메인 컨트롤러를 인터넷과 연결한 게이트웨이를 통해 상기 이상신호를 메인서버로 전송한다. 상기 메인서버는 상기 인터넷을 통하여 전송된 상기 이상신호를 기초로, 상기 이상현상이 감지된 세대가 가입되어 있는 경비회사 PC, 상기 이상현상이 감지된 세대 거주자의 휴대전화, 및 상기 이상현상이 감지된 세대 거주자의 PC중 적어도 하나로 인터넷을 통하여 이상현상을 알리게 된다. 
       
     공동주택, 시큐어리티, 인터넷
Patent KR-20070011773-A (KR)
Title: Air conditioner for hood type controlling wind volume
Inventor: PARK SE YONG
IPC: F24F11/02
Filed: 2005-07-21
Abstract: A hood type air conditioner controlling the wind amount is provided to actively control the wind amount by regulating the discharge wind amount of a duct when the hood type air conditioner is operated. A hood type air conditioner includes a case(1), a hood section, and a cooling section. The hood section is provided in the interior of the case and discharges odor of foods and heat through a hood suction opening(5) and through a discharge opening and a duct by driving a fan. The cooling section is provided on one side of the hood section and includes a condenser, an evaporator, and a compressor. The control unit includes a speed detection sensor, a fan motor, and a control unit. The speed detection sensor detects the speed of wind in the duct. The fan motor drives the fan. The control unit receives a signal from the speed detection sensor to control the number of rotations of the fan motor. The control unit decreases or increases the number of rotations of the fan motor according to the value calculated through the signal from the speed detection sensor.
Patent KR-20070012143-A (KR)
Title: Key input apparatus for mobile phone
Inventor: PARK SANG HA
IPC: H04M1/23
Filed: 2005-07-22
Abstract: A key signal input device for a mobile phone is provided to eliminate an electrical contact pattern by installing piezoelectric sensors on a keypad corresponding to dome switches. Plural piezoelectric sensors(3A,3B,3C,3D,3E) are positioned at proper positions of a keypad panel(1) to output a signal detecting pressure change when the key button of a dome switch is pushed. A connector(5) transmits the signal detected by the piezoelectric sensor to a micro controller unit(7). The micro controller unit receives the signal from the piezoelectric sensor via the connector. The keypad panel is formed in a structure consisting of a first insulation layer(2), a piezoelectric sensor layer(3), and a second insulation layer(4).
Patent KR-20070013374-A (KR)
Title: Antenna for portable terminal
Inventor: LEE JAE RYONG
IPC: H01Q1/22
Filed: 2005-07-26
Abstract: An antenna for a portable terminal is provided to reduce a volume of the terminal by interposing the antenna between components of a key button assembly in a sheet shape. An antenna includes a keypad assembly having plural components, a main antenna unit, and a second antenna unit. A predetermined pattern is formed, and the second antenna unit is interposed between components of the keypad assembly. The keypad assembly has a main board(211) installed in the terminal, a keypad rubber(213) formed on the main board, and a keypad sheet formed on the keypad rubber. The main board has metal domes(212) spaced apart from one another at a predetermined distance. The keypad rubber has contact protrusions corresponding to the metal domes.
Patent KR-20070014773-A (KR)
Title: Air-conditioner with perfume incense and its operating method
Inventor: SHIN SUNG HO
IPC: F24F13/00
Filed: 2005-07-29
Abstract: An air conditioner with a fragrance generating function and an operation method thereof are provided to determine a room pollution degree by an amount of perfume incense to set a perfume incense period, thereby providing pleasant room environment. An air conditioner with a fragrance generating function includes a spraying part(600) for spraying perfume, and an operation setting part(100) for setting operation manipulation commands and a perfume spraying period. A sensing part(300) senses change in pollution degree of a room according to a perfume spraying amount. A control part(400) controls the perfume spraying period according to the change of the room pollution degree.
Patent KR-20070016708-A (KR)
IPC: G21C3/30
Filed: 2005-08-05
Abstract: 본 발명은 봉형 핵연료를 이용한 연구로의 조밀 노심에 관한 것이다.  본 발명의 조밀 노심은 노심 하우징; 상기 노심 하우징의 하부에 제공된 그물 형태의 그리드; 상기 그리드에 고정된 복수의 하부 지지장치; 및 상기 노심 하우징 안에서 자립 상태를 유지하도록 상기 하부 지지장치에 결합된 봉형 핵연료 집합체를 포함한다.  봉형 핵연료 집합체는 상기 노심 하우징의 길이 방향으로 연장되어 상기 노심 하우징 내에서 차지하는 단면 비율을 최대화하도록 미리 정해진 간격으로 서로 이격되고 상기 노심 하우징의 단면 형상과 동일한 형상으로 배치된 복수의 봉형 핵연료를 구비한다.  이와 같이, 봉형 핵연료의 기하학적 배치 구조를 개선하여 노심에서 핵연료 부분이 차지하는 비율을 높임으로써 최대 출력 대비 열중성자속을 증대시킬 수 있다. 
       
     조밀 노심, 열중성자속, 봉형 핵연료, 핵연료 집합체, 접합판, 하부 유도체
Patent KR-20070020628-A (KR)
IPC: A61P7/02
Filed: 2005-08-16
Abstract: 본 발명은 단삼에서 추출한 15,16-디하이드로탄시논(Dihydrotanshinone) I 단일 성분을 유효 성분으로 포함하는 혈전을 과다하게 생성하여 관상동맥질환과 허혈성 질환을 일으키는 혈소판의 활성화 예방 및 치료에 유익한 약학조성물에 관한 것으로, 심근경색, 심부전, 고지혈증에 효과가 있는 종래의 심혈관 치료제의 생약 복합 조성물이 아닌 단일 성분이 혈소판을 활성화시키는 여러 인자(agonist)에 대하여 우수한 혈소판 응집 저해 효과를 나타낸다. 
     특히, 본 발명의 단삼 추출물은 혈소판을 활성화하는 콜라겐과 트롬빈에 대해 억제효과를 나타내므로, 새로운 혈전 및 심혈관계 질환 치료제의 개발에 널리 이용될 수 있다. 
       
     15,16-디하이드로탄시논(Dihydrotanshinone) I, 혈소판, 콜라겐, 트롬빈, 트롬복산 A2, 항혈전제
Patent KR-20070021635-A (KR)
IPC: B22C9/10
Filed: 2005-08-19
Abstract: 본 발명은 브레이크의 캘리퍼하우징 주조용 중자에 관한 것으로, 특히 임의의 크기를 갖는 한 쌍의 금형 내에서 임의의 갯수로 배열된 캘리퍼하우징 주조 공간을 복층으로 구성함으로써 최대생산량을 2배 가까이 향상시킬 수 있을 뿐만 아니라, 압탕의 크기가 커져도 제품의 분리가 용이하도록 된 브레이크의 캘리퍼하우징 주조용 중자에 관한 것이다. 
     본 발명은,  디스크와 마찰패드 및 패드플레이트가 장착되는 브레이크 패드용 공간부(11)와, 상기 공간부의 일측으로 마련되어 가압피스톤이 안착되는 실린더부와, 공간부의 다른 쪽으로 공간부(11)의 폭보다 작은 두께(10b)로 마련된 외측 패드지지부(14)와, 실린더부와 패드지지부를 연결하는 연결부(13)를 갖춘 캘리퍼하우징(10)을 제조하기 위하여 한 쌍의 금형(30a)(30b)의 사이에 끼워서 주조공간(20)을 확보하도록 된 브레이크의 캘리퍼하우징 주조용 중자에 있어서, 상기 실린더부(12)를 형성하기 위해 양 측면에 돌출형성된 한 쌍의 실린더부형성돌기와, 상기 실린더부형성돌기의 수직방향  양면에 상기 외측 패드지지부를 형성하기 위해 서로 엇갈려서 오목하게 형성된 패드지지부형성홈과, 상기 연결부의 내측 면을 형성하면서 상기 금형과 연결부를 형성하도록 상기 패드지지부형성홈의 반대쪽에 배치되도록 각각 돌출성형된 연결부형성돌기를 포함하는 것을 특징으로 한다. 
       
     브레이크, 캘리퍼하우징, 주조, 중자
Patent KR-20070027897-A (KR)
Title: Retaining ring for chemical mechanical polishing
Inventor: KANG JOON MO
IPC: H01L21/304
Filed: 2005-08-30
Abstract: A retaining ring for use in a chemical mechanical polishing is provided to minimizing separation of a wafer during a chemical mechanical polishing process by using a tapered section at a portion being contacted to a lateral side of the wafer using the chemical mechanical process. A retaining ring(100) has a ring-shaped body(110). The body consists of an abrasion resistance plastic such as polyphenylene sulfide or polyetheretherketone, alumina, and metal coated with ceramic. The body includes an upper surface(120), a lower surface(130), and an outer surface defining an outer circumference of the body. The upper surface has screw holes(122) for coupling a carrier base. The body further includes an inner diameter surface(152) for contacting to and retaining a lateral side of a wafer. The inner diameter surface includes a tapered section(152').
Patent KR-20070028692-A (KR)
Title: Liquid crystal display
Inventor: KIM IL GON
IPC: G02F1/133
Filed: 2005-08-30
Abstract: An LCD is provided to reduce the distance between adjacent connection lines, thereby decreasing the difference of parasitic capacitance and line resistance due to the overlap between data lines and the connection lines, by disposing at least one connection line, except a first connection line connected to a first bus line, which is the nearest to an image display area, and a second connection line connected to a second bus line, which is the farthest to the image display area, between the first connection line and the second connection line. An image display area(A) includes a plurality of signal lines formed on a substrate. A plurality of bus lines(106) supply pixel data to the image display area. A signal driver includes sampling switch blocks each consisting of sampling switches, wherein the sampling switches are connected to the bus lines to simultaneously drive respective signal lines. A first sampling switch is connected to the bus line, which is the nearest to the image display area, and a second sampling switch is connected to the bus line, which is the farthest to the image display area. A third sampling is positioned between the first sampling switch and the second sampling switch, and connected to at least one of the other bus lines.