baber/WOPTO huggingface dataset:
Patent KR-20090049122-A (KR)
Inventor: KIM YEON SOO
IPC: B01D71/68
Filed: 2007-11-13
Abstract: 본 발명은 비대칭 폴리에테르술폰 멤브레인의 제조방법 및 그로부터 제조된 비대칭 구조의 폴리에테르술폰 멤브레인에 관한 것이다. 
     본 발명의 제조방법은 지지체 상에 폴리에테르술폰 수지 8∼20중량%, 용매 30∼60중량%, 비용매 21∼25중량%, 친수성 기공 조절제 10∼15중량% 및 촉매 1∼10중량%로 이루어진 고분자용액을 캐스팅하고, 캐스팅된 고분자용액에 온도 20∼65℃ 및 습도 30∼80%로 유지된 공기로 분사하여 멤브레인의 상층부에 기공을 형성한 후, 응고조에 침지하여 상기 지지체로부터 멤브레인을 박리시켜 제조하되, 상기 지지체와 고분자용액간의 온도차를 이용한 열유도상전이에 의해 멤브레인 하층부에 기공이 형성되는 것이다.  본 발명의 멤브레인의 상층부는 용매유도상전이(SIPS)법에 의해 기공을 치밀하게 형성하고, 멤브레인의 하층부는 지지체와 고분자용액간의 온도차에 의해 순간적으로 기공이 형성되는 열유도상전이(TIPS)법에 의해 상대적으로 다공성이 높은 기공을 형성할 수 있으며, 상기 제조방법으로부터 제조된 폴리에테르술폰 멤브레인은 고비대칭 구조로 인해 고유량이면서 유량 감소 현상이 줄어 사용수명이 향상될 수 있다. 
       
     비대칭멤브레인, 폴리에테르술폰, 용매유도상전이법, 열유도상전이법
Patent KR-20090049264-A (KR)
Inventor: MIN BYUNG DUK
IPC: H02S50/00
Filed: 2007-11-13
Abstract: 본 발명은 태양전지 특성곡선 모의 시스템 및 그 방법을 제공하기 위한 것으로, 태양전지의 온도 정보와 광량 정보를 읽고, 전력변환부로부터 태양전지 출력단자 전압(V pv )을 읽고, 태양전지 모듈의 온도 특성곡선과 광량 특성곡선을 추출하여 온도 및 광량 구간을 결정하는 제 1 단계와; 상기 제 1 단계 후 태양전지의 온도전압변환계수, 온도전류변환계수, 광량전압변환계수, 광량전류변환계수를 계산하는 제 2 단계와; 상기 제 2 단계에서 계산한 계수를 이용하여 시뮬레이터의 전류 명령값을 계산하는 제 3 단계;를 포함하여 구성함으로서, 복잡한 태양전지 특성곡선 수학식을 사용하지 않으며 여러 개의 특성곡선을 테이블화하는 번거로움을 해결하여 간단한 기본 테이블과 몇 개의 데이터 상의 값으로 모든 동작 영역에서 태양전지 특성 곡선을 연속적으로 추출할 수 있게 되는 것이다. 
       
     태양전지, 특성곡선, 모의, 전류제어, 전력변환
Patent KR-20090050887-A (KR)
Inventor: CHOI SUNG HO
IPC: F24C7/08
Filed: 2007-11-16
Abstract: 본 발명은 전자레인지에 관한 것이다.  본 발명에서는 에어가이드에 의하여 컨벡션히터의 히터열을 포함하는 공기가 조리실의 내부로 보다 고르게 대류된다.  따라서 본 발명에 의하면, 보다 효율적으로 음식물을 조리할 수 있게 된다. 
       
     전자레인지, 컨벡션히터, 에어가이드
Patent KR-20090051349-A (KR)
Inventor: KIM HA CHUL
IPC: H01L33/50
Filed: 2007-11-19
Abstract: 본 발명은 정전기 방전 보호 기능을 가지는 백색 발광다이오드 칩 및 그 제조 방법에 관한 것이다.  백색 발광다이오드 칩은, 청색 발광다이오드 칩, 제1 형광체층, 그리고 정전기 방전 보호 소자를 포함한다.  청색 발광다이오드 칩은 절연체 기판이 제거되어, 버퍼층, 상기 버퍼층 위에 형성되는 제1 클래드층, 상기 제1 클래드층의 상면 중 일부가 노출되도록 상기 제1 클래드층 위에 형성되는 활성층, 상기 활성층 위에 형성되는 제2 클래드층, 그리고 상기 제2 클래드층과 상기 제1 클래드층에 각각 형성되는 양극 전극과 음극 전극을 포함한다.  제1 형광체층은 상기 제2 클래드층 위에 형성된다.  정전기 방전 보호 소자는 상기 청색 발광다이오드 칩의 위 또는 아래에 설치되며 기판 형태로 형성되고 두 전극이 상기 청색 발광다이오드 칩의 양극 전극과 음극 전극에 각각 전기적으로 연결된다. 
       
     청색 발광다이오드 칩, 형광체층, 정전기 방전
Patent KR-20090063337-A (KR)
Title: The manufacture method of the none toxic fungicide of natural material add to photocatalyst
Inventor: JUNG JUNG CHUL
IPC: A01N65/08
Filed: 2007-12-14
Abstract: A method for manufacturing a natural material non-toxic germicide using a photocatalyst is provided to improve sterilization, plant immunity, photosynthesis, growth of plant and prevention of pathgen. A method for manufacturing a natural material non-toxic germicide containing a photocatalyst comprises: a step of pulverizing a seed of plant having sterilization ability; a step of streaming the pulverized seed to obtain a seed extract; a step of maturing the seed extract in a container having a charcoal; a step of collecting the supernatant from the matured extract; a step of mixing nano sulfur solution and nano silicon solution and adding mineral and humic acid to obtain a functional nano mixture; a step of mixing a chitosan in lactic acid to produce a chitosan-lactic acid mixture; a step of adding titanium dioxide of high activation and stirring to obtain titanium dioxide-chitosan; a step of mixing pyroligneous solution, functional nano mixture, titanium dioxide-chitosan solution and adding vitamin; and a step of adding neem oil and stirring to obtain the non-toxic germicide.
Patent KR-20080056652-A (KR)
Title: Multi-step photomask etching with chlorine for uniformity control
Inventor: KOCH RENEE
IPC: H01L21/027
Filed: 2007-12-14
Abstract: A method for etching a multi-stage photomask by chlorine for controlling uniformity is provided to easily fabricate a phase shift photomask suitable for patterning a feature with a critical dimension not more than 5 mum by improving uniformity and a phase angle range. A film stack having a partially exposed quartz layer through a pattern layer is supplied to the surface of a substrate support table disposed in a process chamber(202). The quartz layer is etched by using first process gas including at least one of fluorocarbon process gas and chlorine-containing process gas(206). The quartz layer is etched by using second process gas including at least one fluorocarbon process gas(208). The fluorocarbon process gas can include at least one of CF4, CHF3, C2F, C4F4 and C4F8, and the chlorine-containing process gas can include at least one of Cl2 and HCl.
Patent KR-20090063845-A (KR)
Title: Wet cleaning equipmint of wafer
Inventor: CHO IN BAE
IPC: H01L21/677
Filed: 2007-12-14
Abstract: A wet cleaning device of a wafer is provided to reduce a cost by commonly using a wafer cassette separating unit, a wafer cassette coupling unit, a wafer cassette loading unit, and a wafer cassette unloading unit. A wafer cassette loading unit(110) transfers a cassette to a wafer cassette transferring robot. A wafer cassette separating unit(120) separates the cassette mounting the wafer to the wafer and the cassette. An SPM(Sulfuric Acid Peroxide Mixture) bath(130) removes the photoresist from the wafer. A C/C(Chuck Clean) bath(140) cleans a chuck of a first wafer transferring robot. An HQDR(Hot Quick Dump Rinse) bath(150) cleans the wafer. An APR(Ammonium Peroxide Replacement) bath(160) cleans the particle and the organic compound of the wafer. A drier(170) dries the wet-cleaned wafer. A wafer cassette coupling unit(180) couples the wafer with the cassette. A wafer cassette unloading unit(190) unloads the cassette combined with the wafer.
Patent KR-20080059084-A (KR)
Title: Ofdm receiver apparatus
Inventor: ADACHI NAOTO
IPC: H04L27/26
Filed: 2007-12-21
Abstract: An OFDM(Orthogonal Frequency Division Multiple) receiver is provided to check the deviation of synchronization regardless of temporal power variation by monitoring the synchronization using a time average of correlation values on frames. An OFDM(Orthogonal Frequency Division Multiple) receiver includes an extracting unit(14), a phase difference calculating unit(21), an accumulating unit(22), and a determining unit(23). The extracting unit extracts plural DBPSK(Differential Binary Phase Shift Keying) signals from OFDM signals. The phase difference calculating unit calculates phase differences between symbols on the extracted DBPSK signals. The accumulating unit accumulates plural phase differences obtained from the phase difference calculating unit. The determining unit determines data, which is transmitted by the DBPSK signals, based on the accumulation result obtained from the accumulating unit.
Patent KR-20090072010-A (KR)
Title: Semiconductor chip package and method for protection crack
Inventor: LEE RAE HYUK
IPC: H01L21/60
Filed: 2007-12-28
Abstract: A semiconductor chip package for preventing a crack and a manufacturing method thereof are provided to improve a solder bonding property by minimizing a crack of a pad in which a solder ball is bonded. A plurality of bonding pads is formed on an active surface of a semiconductor chip. A metal pad is re-wired in the bonding pad. A passivation layer is formed into a dual structure of an oxide film(33) and a nitride film(31) formed on a top part of the metal pad while exposing the metal pad. A solder ball(30) is contacted with the metal pad without pressurization by using an edge part of the exposed oxide film as a buffer. The oxide film of the passivation layer is etched by a wet etching method in order that the nitride film functions as a mask. The metal pad(35) is made of aluminum.
Patent KR-20090073298-A (KR)
Title: Finding units for locating missing articles and finding methods thereof
Inventor: YUN YOUNG MIN
IPC: G08B21/24
Filed: 2007-12-31
Abstract: Units for finding missing articles and finding methods thereof are provided to accurately perform the function of the lost article apparatus for searching by sensing the standardized sound composed of the long signal and mute time. A signal sensing part(160) senses the standardized signal which a user generates. A signal processing part blocks the input of signal, in case the sensed signal is maintained less than the set up time. If the sensed signal is maintained in excess of the set up time, the signal processing unit compulsorily blocks the output of signal. If the signal outputted from the signal processing unit and the password stored in the memory consent are coincident, a main control unit(140) outputs the control signal for the display of the signal for identifying the location and the sound production.
Patent KR-20070058427-A (KR)
Title: Water heater or steam generator
Inventor: MONTANARO MARIO
IPC: F24H1/00
Filed: 2005-07-04
Abstract: The invention relates to a water heater (2) or steam generator comprising a chamber (4) which is divided into two parts (5, 6) that are formed, for example, by drawing. The aforementioned chamber contains a heating body (8) having a main spiral part (10) and two end parts (11, 12) which pass through two circular openings in said chamber. The two end parts are welded to the chamber using a laser beam, such as to produce a continuous weld bead that ensures that the heating body is fixed mechanically and the water heater or steam generator is effectively sealed. For said purpose, a collar (18) is provided on the periphery of each opening. In addition, said collars are equipped with a flared edge (28) to ensure that the two parts of the chamber are welded together effectively.
Patent KR-20070068338-A (KR)
Title: Methods and apparatuses for bone restoration
Inventor: LEONARD ALAIN
IPC: A61F2/44
Filed: 2005-06-08
Abstract: Methods and apparatuses for restoration of human or animal bone anatomy, which may include introduction, into a bone of an expansible implant capable of expansion in a single determined plane, positioning the expansible implant in the bone in order to correspond the single determined plane with a bone restoration plane and opening out the expansible implant in the bone restoration plane. A first support surface and a second support surface spread tissues within bone. The embodiments of the invention may also include injecting a filling material around the implant.
Patent KR-20070022160-A (KR)
Title: Process for the Continuous Synthesis of Methylamines
Inventor: BOSCH MARCO
IPC: C07C211/04
Filed: 2005-06-16
Abstract: Disclosed is a method for the continuous synthesis of methylamines by reacting methanol and/or dimethyl ether with ammonia in the presence of a heterogeneous catalyst. The inventive method is characterized in that a molded body containing a microporous material and at least one organic silicon compound as a binding agent is used as a catalyst. Said molded body is produced with the aid of a method comprising the following steps: (I) a mixture containing the microporous material, the binding agent, a pasting auxiliary, and a solvent is produced; (II) said mixture is mixed and compacted; (III) the compacted mixture is deformed so as to obtain a molded body; (IV) the molded body is dried; and (V) the dried molded body is calcinated. ® KIPO & WIPO 2007
Patent KR-20070057782-A (KR)
Title: Removing crosstalk in an organic light-emitting diode display
Inventor: KIM CHANG OON
IPC: G09G3/30
Filed: 2005-06-17
Abstract: A driver includes a plurality of variable resistors each coupled to a corresponding one of the rows of the organic light-emitting diode display panel, generally between Ground (GND) and the cathodes of the OLEDs on the rows. A variable resistor controller in the driver is coupled to the variable resistors, and adjusts the resistance of the variable resistor coupled to the selected row based upon the display data corresponding to the selected row. The variable resistor controller adjusts the resistance of the variable resistor coupled to the selected row to be inversely proportional to the sum of the display data corresponding to the selected row.
Patent KR-20070074543-A (KR)
Title: Torsional harmonic cantilevers for detection of high frequency force components in atomic force microscopy
Inventor: QUATE CALVIN F
IPC: G01Q60/34
Filed: 2005-07-07
Abstract: A cantilever for the use in atomic force microscopy includes a cantilever arm having a fixed end being attached to a base member and a free end where the cantilever arm has a first shape and an axis of torsion associated with the first shape, and a probe tip projecting from the cantilever arm near the free end where the probe tip is positioned in an offset displacement from the axis of torsion. Alternately, the cantilever arm has a first shape selected to tune a torsional resonance frequency of a selected torsional mode or the fundamental flexural resonance frequency of the fundamental mode so that the torsional resonance frequency and the fundamental flexural resonance frequency has an integer ratio. In this manner, the torsional motion of the torsional harmonic cantilever at that harmonic frequency will be largely enhanced by the corresponding torsional resonance.
Patent KR-20070046130-A (KR)
Inventor: LUPIA JOSEPH ANTHONY
IPC: A61K8/49
Filed: 2005-08-15
Abstract: 특정 입체장애 아민 염 화합물을 포함하는 안정화된 바디 케어 제품, 가정용 제품, 방직 및 직물이 개시되어 있다. 염색된 제품 및 물품은 색 분해로부터 효과적으로 안정화된다. 이들 제품은 예컨대 스킨 케어 제품, 헤어 케어 제품, 치약, 화장품, 세탁 세제 및 직물 유연제, 비-세제계 직물 케어 제품, 가정용 세정제 및 방직 케어 제품이다.  
     입체장애 아민 염, 바디 케어 제품, 가정용 제품, 방직 및 직물, 안정화, 색 분해, 염료
Patent KR-20070043016-A (KR)
Inventor: VAN GESTEL WILHELMUS J
IPC: H04N5/783
Filed: 2005-07-13
Abstract: 가상 음원 처리하여플렉스 스트림에 그래픽 콘텐츠를 포함하는 디지털 비디오 신호를 오소링하는 방법이 개시된다. 이 방법은, 오소링중에 신호를 구성하는 단계와, 스트림에 다중화된 제 1 종류의 화상의 프레임에만 상기 그래픽 콘텐츠를 다중화하는 단계를 포함한다. 이것은 상기한 제 1 종류의 화상만이 스트림에서 판독될 때 상기 신호의 개량된 트릭 재생을 가능하게 한다. 이에 따르면, 트릭 재생중과, 정규 재생으로 복귀할 때 트릭 재생 직후에도 그래픽 콘텐츠를 사용할 수 있다. 
       
     트릭 재생, 그래픽 콘텐츠, 멀티플렉스 스트림, 오소링, 다중화
Patent KR-20070104509-A (KR)
Title: Fixed-mobile communications with mid-session mode switching
Inventor: SINNREICH HEINRICH
IPC: H04B7/26
Filed: 2005-08-15
Abstract: A method for perfoming mode-agile communications during a communications session is disclosed. A communications terminal device (104, 118, 124B, 124A) supporting muliple modes of access is configured to detemine when, during a session involving a first mode of access communi-cations, a second mode of access is available and is to be used for subsequent communications for the session. The communications terminal device (104, 118, 124B, 124A) initiates or controls switchover from one mode of access to another.
Patent KR-20070048265-A (KR)
Inventor: KANEMITSU HIROSHI
IPC: F04B27/10
Filed: 2005-09-29
Abstract: 슬라이딩 장치(1)는 제 1 슬라이딩면(3A)을 구비한 경사판(3)과, 이 경사판(3)과 슬라이딩 하는 반구 형상의 슈(4)로 구성되어 있다.   
     경사판(3)은 Mn과 Si를 함유한 고력 황동의 모재(3B)로 이루어지고, 이 모재(3B)의 내부 및 제 1 슬라이딩면(3A)(모재(3B)의 표면)에는, 미소한 입상의 Mn-Si 화합물(6)이 노출되어 있다.  상기 경사판(3)은, 모재(3B)에 절삭가공한 후에 에칭을 행함으로써, 표면인 제 1 슬라이딩면(3A)에 노출되는 Mn-Si 화합물(6)의 노출량이 많아지고 있다.   
     종래와 비교하여, 내시저성이 양호하고 제조 코스트가 저렴한 슬라이딩 장치(1)를 제공할 수 있다.   
     
     경사판, 제 1 슬라이딩면, 제 2 슬라이딩면, 슈, 슬라이딩 장치
Patent KR-20070083620-A (KR)
Title: Mask blank manufacturing method
Inventor: OHKUBO YASUSHI
IPC: G03F1/00
Filed: 2005-11-04
Abstract: A mask blank manufacturing method comprising a thin-film forming step of forming a thin film to serve as a mask pattern on the mask blank substrate and a resist film forming step of forming a resist film on the thin film further comprises a step of storing resist film formation information including date information on the date when the resist film is formed on the thin film, a step of associating the resist film formation information with the mask blank, a step of detecting a mask blank in which the variation in sensitivity of the resist film formed on the mask blank is out of the allowable range, a step of removing the resist film formed over the detected mask blank, and a step of forming a resist film again on the thin film from which the former resist film has been removed.
Patent KR-20070067234-A (KR)
Title: Method and apparatus for inter-system active handoff of a hybrid subscriber unit
Inventor: MARIN JAMES S
IPC: H04W40/02
Filed: 2005-11-21
Abstract: A communication system (100) provides for an active handoff of a voice call between a packet switched network (110) and a circuit switched network (120). An active handoff from the packet switched network to the circuit switched network is accomplished by multicasting the call over forward links of both networks during the handoff. An active handoff from the circuit switched network to the packet switched network is accomplished by multicasting the call over reverse links of both networks during the handoff. The former handoff further may be facilitated by routing the call for each network through a same packet data control switch (118), and the latter handoff further may be facilitated by routing the call for each network through a same mobile switching center (126). Further, a subscriber unit (102) operating concurrently in both networks may comprise multiple transceivers or a transceiver that is rapidly switched between the networks.
Patent KR-20070085733-A (KR)
Title: Nanotube-based fluid interface material and approach
Inventor: WYLAND CHRIS
IPC: H01L23/373
Filed: 2005-11-04
Abstract: A thermal interface material (130) facilitates heat transfer between an integrated circuit device (120) and a thermally conductive device (140). According to an example embodiment, a thermal interface material (130) includes carbon nanotube material that enhances the thermal conductivity thereof. The interface material (130) flows between an integrated circuit device (120) and a thermally conductive device (140). The carbon nanotube material conducts heat from the integrated circuit device (120) to the thermally conductive device (140).
Patent KR-20070095321-A (KR)
Title: Personal care compositions
Inventor: ZHANG XIAODONG
IPC: A61K8/73
Filed: 2005-10-31
Abstract: The deposition of a benefit agent on a substrate after treatment of the substrate with a personal care composition which has a viscosity of at least 50 mPa.s at 25 °C and comprises the benefit agent and a low molecular weight surfactant is improved when a water-soluble polymer is used as a substitute for at least a portion of the low molecular weight surfactant. The headspace concentration of a fragrance provided by such personal care composition is also increased.
Patent KR-20070087669-A (KR)
Title: Variable water flow and dilution chemical dispenser
Inventor: HUBMANN CURTIS
IPC: B05B7/24
Filed: 2005-12-15
Abstract: A dispenser for mixing and dispensing a liquid chemical concentrate from a container with a stream of diluting water. The dispenser includes two valve members which control in one instance the water flow and in another instance the amount of concentrate being siphoned into the water flow. The dispenser is of a simplified design yet can afford a variety of different chemical concentrations, as well as various flow rates of the water.
Patent KR-20070110839-A (KR)
Title: Roller bearing
Inventor: EGAMI MASAKI
IPC: F16C33/34
Filed: 2005-12-27
Abstract: A roller bearing to be assembled in various industrial machines, vehicles, etc. that reduces deterioration of seal members, maintaining excellent hermetic sealing for a prolonged period of time, and that excels in reliability, durability, etc. There is provided a roller bearing to be assembled in various industrial machines, vehicles, etc., comprising an inner ring and an outer ring and further comprising multiple rolling elements interposed between the inner ring and the outer ring and seal members fitted to openings at both ends in the axial direction of the inner ring and outer ring, wherein the seal members include a rubber molding brought into contact with at least water, an alkali solution, grease, etc., the rubber molding being a molding of vulcanizable fluororubber composition which is comprised of a copolymer containing tetrafluoroethylene, propylene and a crosslinkable monomer of C2-C4 unsaturated hydrocarbon having some of its hydrogen atoms substituted with fluorine atoms.
Patent KR-20070095450-A (KR)
Title: Thermoplastic elastomer composition for vehicle window-molding
Inventor: FURUKAWA HARUHIKO
IPC: C08L71/12
Filed: 2006-01-26
Abstract: A thermoplastic elastomer composition for a vehicle window-molding comprising: (a) 100 parts by mass of a styrene-type thermoplastic elastomer having a number-average molecular weight equal to or greater than 100,000; (b) 30 to 300 parts by mass of a non-aromatic rubber softener; (c) 5 to 150 parts by mass of a polyolefin-type resin; (d) 5 to 200 parts by mass of a polyphenylene ether-type resin; and a glass panel molding assembly produced with the use of the composition.
Patent KR-20070110081-A (KR)
Title: Quinazolinone t-type calcium channel antagonists
Inventor: BARROW JAMES C
IPC: C07D239/80
Filed: 2006-03-08
Abstract: The present invention is directed to quinazolinone compounds which are antagonists of T-type calcium channels, and which are useful in the treatment or prevention of disorders and diseases in which T-type calcium channels are involved. The invention is also directed to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which T-type calcium channels are involved.
Patent KR-20070117672-A (KR)
Title: Highly viscous, largely amorphous polyolefin
Inventor: BECKER HINNERK GORDON
IPC: C08F210/04
Filed: 2006-03-13
Abstract: The invention relates to a polyolefin containing the following monomer units: a) a maximum of 25 wt. % of units derived from ethene, b) a maximum of 75 wt. % of units derived from propene, and c) between 5 and 100 wt. % of units derived from an alpha-olefin containing between 4 and 20 C atoms. The inventive polyolefin has the following parameters: d) a weight-average molecular weight of between 70,000 and 10,000,000 g/mol, e) a polydispersity of between 4 and 60, f) a melting viscosity, measured by oscillation rheometry with a shearing speed of 1 Hz at 190 °C, of between 100,000 and 100,000,000 mPa s, g) a needle penetration of between 3 and 70 0.1 mm, h) a melting enthalpy of between 2 and 100 J/g, i) a glass transition temperature Tg of between-15 °C and-80 °C, and j) an end of the crystalline part melting range at between 85 and 175 °C. The inventive polyolefin is compatible both with ethylene polymers and propylene polymers, and is suitable for using in films, sealing strips, and moulded parts.
Patent KR-20080033144-A (KR)
Title: Processes for hydrolysis of polyphosphoric acid in polyareneazole filaments
Inventor: NEWTON CHRISTOPHER WILLIAM
IPC: D01F6/74
Filed: 2006-03-27
Abstract: The present invention relates to processes for hydrolyzing polyphosphoric acid in polyareneazole filaments.
Patent KR-20070122544-A (KR)
Title: Arylamine- and fluorene-polymers for oled displays
Inventor: WILSON RICHARD
IPC: H01L51/30
Filed: 2006-04-13
Abstract: A pulsed driven display comprising an organic light-emitting device, said device comprising an organic layer comprising a semiconductive polymer, said polymer comprising a fluorene or triarylamine repeat unit, the fluorene or triarylamine repeat unit having a group R pendent from the polymer backbone, wherein R has general formula (I) where Ar1 represents phenyl or a group comprising napthyl; Ar2 represents phenyl or a group comprising napthyl; R' represents a substituent group; R" = H or a substituent; n=0, 1, 2 or 3; m=0 or 1; and n'=1 or 2, with the proviso that m=0 if n=0.