baber/WOPTO huggingface dataset:
Patent KR-20100020523-A (KR)
Title: Process, and apparatus utilizing the same, for manufacturing steel sheet
Inventor: NARITA JUN
IPC: C21D1/42
Filed: 2007-07-26
Abstract: A process in which a steel sheet of high quality is obtained through, in static heating treatment, enhancing of the estimation precision for material quality model and enhancing of the precision of heating condition according to the same. There is provided a process for manufacturing a steel sheet through heating of steel sheet while controlling heating conditions to obtain a desired product, comprising setting heating conditions on the basis of result of comparison between measured material quality value at given position of the steel sheet and preset material quality target value at the given position of the steel sheet and comprising heating under the above heating conditions the given position of the steel sheet held in a static state.
Patent KR-20100021523-A (KR)
Title: Removable adhesive tape with foldable pull tab
Inventor: BARTUSIAK JOSEPH T
IPC: C09J7/20
Filed: 2008-05-07
Abstract: A stretch releasing adhesive tape is disclosed comprising a pull tab comprising a single tab film which is adhered to both adhesive surfaces of the stretch releasing adhesive tape. The pull tab is foldable so as to comprise an unobtrusive visual appearance, and may also be extendable so that the pull tab may be grasped to activate the stretch release.
Patent KR-20100072034-A (KR)
Title: Method and apparatus for creating a remotely activated secure backup service for mobile handsets
Inventor: MCLEAN IVAN HUGH
IPC: G06F21/24
Filed: 2008-09-15
Abstract: Method and systems for protecting data on a mobile handset when remotely activated by a user involve encrypting the data using an encryption key, storing the encrypted data, and deleting the non-encrypted data along with the encryption key. Data may also be uploaded to a server to via a cellular data call for use in backing up the mobile handset. A mobile handset application configures the handset to receive activation commands from a server to encrypt, upload or download data. The encryption key is either received from the server or generated by the mobile handset and communicated to the server. Mock data files may be generated and stored on the mobile handset to enable handset applications to function normally after the data files have been encrypted.
Patent KR-20100117113-A (KR)
Inventor: BUCK NEIL ROBERT
IPC: A23L33/155
Filed: 2009-02-12
Abstract: 본 발명은 근육 강도, 근육 기능 또는 둘 모두를 증가시키기 위한 25-OH D3(칼시페다이올)의 용도에 관한 것이다.  비타민 D3(콜레칼시페롤)은 선택적으로 25-OH D3과 함께 이용될 수 있다.  약학 조성물의 형태 및 투여, 및 또한 약제의 제조 방법이 개시되어 있다.
Patent KR-20100112657-A (KR)
Inventor: AZUMA MASAFUMI
IPC: C22C38/38
Filed: 2009-03-26
Abstract: 이 냉연 강판은, 질량％로, C : 0.05％ 이상, 0.095％ 이하, Cr : 0.15％ 이상, 2.0％ 이하, B : 0.0003％ 이상, 0.01％ 이하, Si : 0.3％ 이상, 2.0％ 이하, Mn : 1.7％ 이상, 2.6％ 이하, Ti : 0.005％ 이상, 0.14％ 이하, P : 0.03％ 이하, S : 0.01％ 이하, Al : 0.1％ 이하, N : 0.005％ 미만 및 O : 0.0005％ 이상, 0.005％ 이하를 함유하고, 잔량부로서 철 및 불가피적 불순물을 포함하고, 강판 조직이, 주로 결정 입경이 4㎛ 이하인 폴리고널페라이트와, 베이나이트 및 마르텐사이트의 경질 조직을 갖고, 마르텐사이트의 블록 사이즈가 0.9㎛ 이하이고, 마르텐사이트 중의 Cr 함유량이, 폴리고널페라이트 중의 Cr 함유량의 1.1 내지 1.5배의 양이고, 인장 강도가 880㎫ 이상이다.
Patent KR-20110002026-A (KR)
Inventor: LEE SEONG JAE
IPC: G01L3/02
Filed: 2009-03-13
Abstract: 본 발명은 3개 세트의 자기장 센서를 샤프트 둘레에 놓음으로써 토크 센서내의 자기장 노이즈의 효과를 상쇄시키는 방법 및 장치를 포함한다.  제1 세트의 필드 센서는 샤프트의 중앙 영역에 놓이고 제2 및 제3 세트의 필드 센서는 중앙 영역에 놓인 필드센서의 좌우측에 각각 놓인다.  토크 유도 자기장은 이러한 배열의 필드 센서에 의해 상쇄되지 않지만 근거리장 소스로부터의 근거리자기장은 상쇄된다.
Patent KR-20100134728-A (KR)
Inventor: COLLINS BRUCE
IPC: H04W28/10
Filed: 2007-04-13
Abstract: 브로드캐스트된 데이터 오브젝트들에 관련되는 인기도 측정치들에 기초하여 브로드캐스트 제공 용량을 할당하는 시스템들, 방법들, 장치 및 장비가 제시된다.  인기도 측정치들에 기초하여 브로드캐스트 제공 용량을 할당함으로써, 서비스 품질(Quality of Service, QoS) 인지(perception)는 수신 실패들의 수를 감소시키고, 데이터 오브젝트 액세스 지연을 감소시키고 그리고/또는 배터리 전력 및 처리 능력들과 같은, 무선 장치 자원의 소모를 감소시킴으로써 개선될 수 있다.
Patent KR-20110034588-A (KR)
Inventor: NGUYEN HAO THAI
IPC: G11C16/26
Filed: 2009-04-01
Abstract: 병렬로 감지되는 일 그룹의 비휘발성 메모리 셀 중에 한 메모리 셀의 도통 전류를 감지하여 결과를 데이터 버스에 제공하는 감지 회로가 제시된다. 프리차지 회로는 노드를 초기 전압까지 충전하기 위해 노드에 결합된다. 중간 회로가 노드에 결합되고 메모리 셀에 연결될 수 있어, 프리차지 회로로부터 전류가 메모리 셀에 공급될 수 있다. 회로는, 노드에서 방전률에 의해 도통 전류의 판정을 수행하는 비교기 회로; 판정 결과를 유지하기 위해 비교기 회로에 결합된 데이터 래치; 및 래치된 결과를 노드에 무관하게 데이터 버스에 공급하기 위해 데이터 래치에 결합된 전송 게이트를 포함한다. 이 배열은 감지 성능을 개선하며 감지 동안 아날로그 감지 경로 상에 잡음을 제거하고 스위칭 전류를 감소시키는데 도움을 줄 수 있다.
Patent KR-20120086499-A (KR)
Title: Bismuth telluride nanowires through annealing process, and Method of development for the enhancement of thermoelectric efficiency of the same
Inventor: LEE JONG MIN
IPC: B82B1/00
Filed: 2011-01-26
Abstract: PURPOSE: A supporter and a method of improving thermoelectric efficiency are provided to increase thermoelectric efficiency of a thermoelectric module consisting of a nano wire structure by improving conductivity through the crystal structure improvement of the nano wire structure. CONSTITUTION: A bismuth telluride nano wire is formed inside a porous supporter. The bismuth telluride nano wire is made of a monocrystal. The bismuth telluride nanowire is heat-treated in an inactive atmosphere. A Seeback coefficient of the bismuth telluride nano wire satisfies 57μV/K-62μV/K. The inactive atmosphere is formed with one gas selected from helium, neon, argon, krypton, xenon, or radon.
Patent KR-20120086500-A (KR)
Title: The apparatus and method for imitating fault using software
Inventor: LEE YOUNG JUN
IPC: G06F9/455
Filed: 2011-01-26
Abstract: PURPOSE: A malfunction simulating device using software and a method thereof are provided to reduce costs for measuring hardware malfunction by defining a position of the malfunction in detail through the software and preventing permanent damage to hardware. CONSTITUTION: A malfunction simulating unit(110) executes a malfunction simulation by recording an operation value in a specific position in a software executing area for the malfunction simulation. A malfunction detecting unit(130) detects malfunction generated in software by comparing an execution value of the software with a standard execution value. A scanning unit calculates an execution address by scanning the software executing area. The scanning unit includes a counter(111) which counts the number of times of execution according to each command by scanning the software executing area and a distribution calculating unit(112) which selects a section about the number of times of execution to calculate a distribution chart.
Patent KR-20120087571-A (KR)
Title: Data alignment circuit
Inventor: KANG TAE JIN
IPC: G11C11/4096
Filed: 2011-01-28
Abstract: PURPOSE: A data aligning circuit is provided to align data by selecting a DDR2 operation mode and a DDR operation mode in response to a control signal inputted from a data pad. CONSTITUTION: A selection transmitting unit(2) transmits a rising pulse and a falling pulse generated by buffering a data strobe signal in response to a control signal inputted from the outside to a selection rising pulse and a selection falling pulse or transmits a ground voltage to the selection rising pulse and the selection falling pulse. A data latch unit(3) latches data in response to the rising pulse, the falling pulse, the selection rising pulse, and the selection falling pulse. Data is aligned by selecting a DDR2 operation mode and a DDR operation mode in response to the control signal.
Patent KR-20110091459-A (KR)
Title: Pointer, position detection apparatus and position detection method
Inventor: ODA YASUO
IPC: G06F3/033
Filed: 2011-01-31
Abstract: PURPOSE: A pointer, a position detection apparatus, and a position detection method are provided to extract a plurality of sorts of information at the same time. CONSTITUTION: A pointer transmits two codes such that a pressure applied to a pen tip is associated with a time difference between the two codes. A position detector carries out a correlation matching operation between signals generated in reception conductors and correlation calculation codes corresponding to the two codes, to thereby detect a position on a sensor section pointed to by the pointer from a result of the correlation matching operation and based on at least one of the codes.
Patent KR-20120088393-A (KR)
Title: Method for fabrication of aggregate used in PHC pile and PHC pile using the same
Inventor: LEE JIN SEOP
IPC: B02C23/08
Filed: 2011-01-31
Abstract: PURPOSE: An aggregate manufacturing method for PHC(pretensioned spun high strength concrete) pile and a PHC pile using the same are provided to substitute for natural aggregate and omit autoclave process which consumes large amount of energies. CONSTITUTION: Anaggregate manufacturing method for PHC pile comprises the following steps: separating iron oxide by adding a reducing agent to oxidizing slag; cooling the oxidizing slag using a melting electric furnace including iron oxide; pulverizing the oxidizing slag using the cooled electric furnace; sorting the oxidizing slag by iron composition using magnetic force; separating the oxidizing slag by sieving(510); and adding silicon dioxide(520).
Patent KR-20120090717-A (KR)
Title: Jag nong gi
Inventor: LEE JUNG GU
IPC: A01C5/00
Filed: 2011-02-08
Abstract: PURPOSE: A cultivating apparatus is provided to cultivate plenty of crops on a large sized cultivated land based on few amount of labor force. CONSTITUTION: A cultivating apparatus includes a pin, a spring, and a rod. The apparatus cultivates plenty of crops on a large sized cultivated land based on few amount of labor force.
Patent KR-20120099169-A (KR)
Title: Coating solution for magnesium materials having excellent corrosion resistance, method of preparing the same, and coating method of magnesium materials using the same
Inventor: HWANG TAE JIN
IPC: C09D7/80
Filed: 2011-02-10
Abstract: PURPOSE: A coating solution is provided to able to form a protection film having excellent adhesion and corrosion resistance by only one coating using existing coating technology without using environment-harmful material. CONSTITUTION: A coating solution of magnesium material comprises a silica precursor mixture consisting of tetraethoxysilane, methyltriethoxysilane, glycidyloxypropyltrimethoxysilane. A manufacturing method of the coating solution comprises a step(S10) of preparing a mixed solution by mixing 5-20 M of ethanol, 5-20 M of water, 0.01-0.1 M of nitric acid and stirring the mixture; a step(S20) of preparing a silica precursor mixture by mixing 0.1-1 M of tetraethoxysilane, 0.2-2.2 M of methyltriethoxysilane, and 0.1-1 M of glycidyloxypropyltrimethoxysilane; a step(S30) of mixing the silica precursor mixture and the silica nanoparticle colloid to the mixed solution, and a step of stirring the mixture. [Reference numerals] (S10) Preparing a mixed solution by mixing ethanol; (S20) Generating a silica precursor mixture by mixing TEOS, MTES and GPTMS; (S30) Mixing the silica precursor mixture and silica colloid
Patent KR-20120095259-A (KR)
Title: Digital device controller with touch based interface using many small electrode
Inventor: KANG JUN WON
IPC: H04Q9/00
Filed: 2011-02-18
Abstract: PURPOSE: A digital device controller having a touch-based interface is provided to match a plurality of electrodes with single key value by covering a top of electrodes with a key pad film. CONSTITUTION: An electrode area setting unit(400) sets up a key area. The electrode area setup unit sets up a key value such as a number or a function for generating a control command. A touch signal recognizing unit(500) recognizes whether to touch an electrode. The touch signal recognizing unit recognizes whether to select a preset key. An infrared ray signal generating unit(600) generates an infrared ray signal about a data code and a custom code including a control command.
Patent KR-20120096367-A (KR)
Title: 세정부재를 구비한 나노버블 발생장치
Inventor: NO MYEONG AE
IPC: B01F3/04
Filed: 2011-02-22
Abstract: 본 발명은 기포의 생성과 소멸과정에서 초고온, 초고압 상태를 순간적으로 유도하는 초미립 산소기포를 물과 공기만으로 발생시켜 우리 몸체 유익한 온열 초음파, 대량의 음이온을 방출하여 피부미용, 다이어트, 두피탈모방지, 음이온, 피부 트러블 방지, 온열 효과 등을 얻을 수 있는 욕조용 나노버블 발생장치 및 그 장치의 나노버블 분출 헤드를 제공함에 그 목적이 있다.  본 발명의 세정부재를 구비한 나노버블 발생장치는, 내부에 공간부(101)가 형성되는 본체(100'); 상기 본체(100')의 하부에 설치되며, 욕조(B) 안의 물을 흡입하기 위한 흡입호스(114)와 상기 흡입호스(114)의 끝단에 연결되는 흡입노즐(112)을 구비하는 액체 흡입부(110); 상기 공간부(101)에 설치되며, 상기 액체 흡입부(110)를 통해 물을 흡입하는 순환펌프(120); 상기 공간부(101)에 설치되며, 상기 순환펌프(120) 내부로 흡입되는 물에 공기를 흡입하여 혼합시키도록 상기 순환펌프(120)와 상기 액체 흡입부(110)의 연결부위에 설치되는 기액 혼합관(130); 상기 공간부(101)에 설치되며, 상기 순환펌프(120)를 통해 이송된 기액을 일정한 압력으로 분출하도록 기액 이동관(150)을 통해서 상기 순환펌프(120)와 연결되는 압력탱크(140); 상기 공간부(101)에 설치되며, 상기 기액 이동관(150)의 일측에 설치되어 상기 순환펌프(120) 내에 일정양의 물을 공급하는 마중물통(160); 상기 본체(110')의 하부에 설치되며, 상기 압력탱크(140)에 연결되는 기액 배출관(170); 나노버블 발생을 위해 상기 기액 배출관(170)에 연결되는 나노버블 분출 헤드 조립체(200);를 포함하되, 상기 흡입호스(114)의 중간에 설치되며, 상기 흡입노즐(112)을 통해 상기 흡입호스(114)로 흡입되는 물을 감지하고 일정 시간 동안 물이 흡입되지 않는 경우, 상기 순환펌프(120)의 구동을 정지(off)시키는 전자제어기(C); 상기 흡입호스(114)의 중간에 설치되며, 상기 순환펌프(120)의 구동 정지 시에 물의 역류를 방지하는 체크밸브(V); 다수의 분출공(403)이 형성된 중공(中空) 부재의 분사관(402)과 상기 분출 헤드에 끼워맞추어지는 캡(405)을 가지는 세정 부재(400);를 더 포함한다.
Patent KR-20120097695-A (KR)
Title: Apparatus for making the photovoltaic absorber layer, photovoltaic absorber layer and solar cell
Inventor: JEON CHAN WOOK
IPC: H01L31/18
Filed: 2011-02-25
Abstract: PURPOSE: A method for manufacturing a photovoltaic absorber layer, the photovoltaic absorber layer, and a solar cell are provided to efficiently perform a bonding reaction between selenium and a metal precursor by previously including selenium in a metal precursor layer. CONSTITUTION: A metal precursor layer is deposited on a substrate(106). Selenium is deposited on the metal precursor layer. The substrate faces a deposition source of the selenium and metal comprising the metal precursor layer. The metal precursor layer includes an alloy layer including copper-indium-gallium. The substrate is rotated and transferred in a chamber(101).
Patent KR-20120103848-A (KR)
Title: A bed for child patient with a auxiliary bed
Inventor: HAN BYOUNG GUN
IPC: A61G7/05
Filed: 2011-03-11
Abstract: PURPOSE: A bed for pediatric patients equipped with an auxiliary bed for protectors is provided to adjust space through sliding the pediatric bed, thereby the pediatric patient and the protector can take a rest. CONSTITUTION: A bed for pediatric patients equipped with an auxiliary bed for protectors comprises an auxiliary bed(110) and a pediatric bed(120). The auxiliary bed is settled in the central part of a mattress frame(111) made by the mattress corporation. Side rails are installed to be elevatable at left and right sides of the mattress frame. Casters are rotary installed at lower parts of four legs in the auxiliary bed frame. The pediatric bed is installed at the upper part of the auxiliary bed so that the pediatric bed can slide along the longitudinal direction of the bed and be folded or overlapped by sliding.
Patent KR-20120106359-A (KR)
Title: Method for forming metal oxide film
Inventor: PARK JONGH YURK
IPC: H01B13/00
Filed: 2011-03-18
Abstract: PURPOSE: A method for forming a metal oxide film is provided to control electrical conductivity of the metal oxide film by controlling doping conditions of an ion injection process. CONSTITUTION: A coating solution including a metal precursor is prepared(S110). The metal precursor is an organic metal compound. A coating layer is formed on a substrate by supplying the coating solution on the substrate(S120). The coating layer is formed by ink-jet printing, spin coating and screen printing. A first metal oxide film is formed by drying the coating layer(S130). The electrical conductivity of the first metal oxide film is controlled by doping impurity on the first metal oxide film. [Reference numerals] (AA) Start; (BB) End; (S110) Preparing a coating solution including a metal precursor; (S120) Forming a coating layer; (S130) Forming a first metal oxide film; (S140) Doping impurities(electric conductivity control)
Patent KR-20120107775-A (KR)
Title: Turbo charger
Inventor: KWON SEONG
IPC: F02B39/00
Filed: 2011-03-22
Abstract: PURPOSE: A turbocharger is provided to increase air speed by a fast rotary speed and a wide contact area between a compressor wheel and the air. CONSTITUTION: A turbocharger comprises a compressor wheel(40), a compressor housing(32), a turbine housing(34), and a turbine wheel(60). The compressor wheel pulls in the air by rotating. The compressor wheel is placed in a hollow portion of the compressor housing. The turbine wheel is placed in the turbine housing, and connected to the compressor wheel with a shaft. A blade unit of the compressor wheel is unfolded in a radial direction, and the contact area between the air and a blade unit increases when the rotary speed of a rotary center unit in the compressor wheel becomes faster.
Patent KR-20120110399-A (KR)
Title: Multi-core optical cable monitoring system of live line and method of monitering the same
Inventor: HWANG NAM SUK
IPC: G01M11/00
Filed: 2011-03-29
Abstract: PURPOSE: A system for monitoring a multi-core optical cable operating line and a monitoring method for the same are provided to minimize a data loss in an operation network structure and to prevent causes of the performance degradation and malfunction of establishment equipment. CONSTITUTION: An optical switch for monitoring a multi-core optical cable operating line comprises an OTDT(Optical Time-Domain Reflectometer) and a multi-wavelength OTDR(1c). The OTDR monitors the existence of the abnormal operation of an optical line by measuring the intensity of reflection lights generated by monitoring lights in the optical line. The multi-wavelength OTDR computes location information by comparing and analyzing OTDR data with respect to operation frequency lights and monitoring frequency lights of the optical line.
Patent KR-20120113016-A (KR)
Title: Method of commercially transacting artwork through internet and system thereof
Inventor: JUNG JAE HAN
IPC: G06Q30/06
Filed: 2011-04-04
Abstract: PURPOSE: An artwork commerce method through the internet and a system thereof are provided to supply earnings to artists in every hierarchy by offering opportunities for selling artworks and the copyright of the artworks to the artists. CONSTITUTION: An artwork market server(100) suggests an artwork registration of an artist(200) through the internet. When a registration request for an artwork is received, the server determines a category of the artwork. The server requests the evaluation of the artwork to each expert(300) of an expert groups corresponding to the category. The server transmits information about the artwork and results of the evaluation to a consulting company(500). [Reference numerals] (100) Artwork market server; (200) Artist; (300) Evaluation of an expert; (400) Purchaser; (500) Consulting company; (AA) Wired/wireless internet
Patent KR-20120113989-A (KR)
Title: Hierarchical fingerprint verification apparatus and method using similarity distribution
Inventor: CHAE SEUNG HOON
IPC: G06K9/20
Filed: 2011-04-06
Abstract: PURPOSE: A hierarchical fingerprint authenticating device using similarity distribution and a method thereof are provided to accurately perform authentication by passing through two of fingerprint comparing processes based on binary image information of a fingerprint and fingerprint feature points. CONSTITUTION: A fingerprint image input unit(120) receives a user fingerprint image. A feature-based fingerprint matching unit(140) extracts feature points from the user fingerprint image and registration fingerprint image stored in a database(110) to perform feature-based fingerprint matching based on the feature points. A similarity determining unit(150) determines similarity between the user fingerprint image and the registration fingerprint image. If the similarity between the images is within fixed scope, a binary image-based fingerprint matching unit(160) performs binary image-based fingerprint matching. [Reference numerals] (110) Database unit; (120) Fingerprint image input unit; (130) Feature correcting unit; (140) Feature-based fingerprint matching unit; (150) Similarity determining unit; (160) Binary image-based fingerprint matching unit; (170) Certifying unit
Patent KR-20120114486-A (KR)
Inventor: SHIM SHANG KOOUN
IPC: B05B15/04
Filed: 2011-04-07
Abstract: 본 발명은 지상 야적장 내화피복 뿜칠공사용 보양재 및 뿜칠공법에 관한 것으로, 더욱 상세하게는 지상의 야적장에서 철골 보의 측면에 내화피복 뿜칠공사를 시행할 때 사용될 수 있는 지상 야적장 내화피복 뿜칠공사용 보양재 및 뿜칠공법에 관한 것이다.
Patent KR-20120138252-A (KR)
Inventor: KIM MI KYOUNG
IPC: G06F17/30
Filed: 2011-04-22
Abstract: PURPOSE: A consultation management system of an automatic response system and a method thereof are provided to write a consultation code by forming consultation items in a top-down method and supplying the formed consultation items to consultants. CONSTITUTION: A client information database(201) stores client information. A classification code database(202) stores primary codes about classification items of a processing result and an inquiry type, a product, and a service. A consultation management server(230) provides consultation means to a consultant terminal(270). The consultation management server combines a processing result main code with a product service main code and an inquiry type main code in order. The consultation management server stores generated consultation codes in a consultation statistics database(203). [Reference numerals] (201) Client information DB; (202) Classification code DB; (203) Consulation statistics DB; (204) Consulation knowledge DB; (210) Private exchanger; (220) IVR server; (230) Consulation management server
Patent KR-20120125685-A (KR)
IPC: G08B13/196
Filed: 2011-05-09
Abstract: PURPOSE: A wireless emergency bell device is provided to be installed in a bank or a public organization for emergency signal generation and to intensify an emergency crime preventing function. CONSTITUTION: A wireless emergency bell device comprises a switch(27), a central controller(22), an emergency output signal transmitter(23), and an emergency bell wireless signal transceiver(24). The switch transmits a connection point signal by a push operation of a user. The central controller leads a saved emergency bell input signal according to a switching signal through the switch and outputs it. The emergency output signal transmitter codes an output signal of the central controller and transfers an emergency bell output signal. The emergency bell wireless signal transceiver wirelessly transmits the emergency bell output signal to an emergency bell central control system server. [Reference numerals] (22) Central controller; (220) Emergency bell input signal storing unit; (23) Emergency output signal transmitter; (24) Emergency bell wireless signal transceiver; (26) ID signal establishing unit; (AA) Regular power source line; (BB) Transmission to an emergency bell central control system server
Patent KR-20110126070-A (KR)
Title: Method for manufacturing microcrystalline semiconductor film and method for manufacturing semiconductor device
Inventor: TEZUKA SACHIAKI
IPC: H01L21/336
Filed: 2011-05-13
Abstract: PURPOSE: The manufacturing method of a microcrystal semiconductor film and the manufacturing method of a semiconductor device are provided to enhance crystalline and to improve deposition rate of the microcrystal semiconductor film by adding rare gas to source gas of the microcrystal semiconductor film. CONSTITUTION: An oxidation insulating layer(55) is formed on a substrate. A first microcrystal semiconductor film(57) is formed on the oxidation insulating layer. A second microcrystal semiconductor film(59) is formed on the first microcrystal semiconductor film. The size of a mixed phase particle of a second microcrystal semiconductor film is determined by the interval of a mixed phase particle(57a) of the first microcrystal semiconductor film. A third microcrystal semiconductor film is formed on the second microcrystal semiconductor film.