Abstract:
PURPOSE: A fabrication method of a triphenylene-based reactive mesogen is provided to mass-produce triphenylene based a discotic liquid crystalline compound for a liquid temperature range adjustment. CONSTITUTION: A fabrication method of triphenylene-based reactive mesogen marked with chemical formula 1 comprises a step of reacting a compound marked with chemical formula 2 and a compound marked with chemical formula 3. In the chemical formulas, A is either -OH or -NH2. R is H or a functional group of compounds marked with chemical formula 1-a~1-c.
Abstract:
PURPOSE: An organic gate insulator and an organic thin film transistor device using thereof are provided to form an organic insulating layer using a polyimide polymer, and to reduce a leakage current of the insulator through a photo-curing. CONSTITUTION: An organic gate insulator for an organic thin film transistor device contains a polyimide polymer. The producing method of the polyimide polymer comprises a step of reacting polyimide including a hydroxy group with acryloyl-based halide. The organic thin film transistor device comprises a gate electrode, an organic insulating film, an organic semiconductor layer, a source electrode and a drain electrode on a glass or a plastic substrate. The organic insulating film is formed by spraying a coating solution including the polyimide polymer to the substrate including the gate electrode, and photo-curing.
Abstract:
PURPOSE: A photoalignment film is provided to ensure excellent optical permeability, heat resistance, mechanical properties, photoalignment properties, a high pretilt angle, and an excellent voltage holding ratio. CONSTITUTION: A photoalignment film is obtained by irradiating polarized ultraviolet rays to a polyamic acid resin represented by chemical formula 1. The polyamic acid resin is prepared using aromatic diamine containing an imide side chain as a monomer. The polyamic acid resin is soluble with dimethylacetamide, dimethylformamide, N-methyl-2-pyrrolidone, tetrahydrofuran, chloroform, acetone, ethylacetate, or gamma-butyrolactone.
Abstract:
A composition for preparing an organic passivation layer is provided to ensure excellent coating property, surface roughness, and thin film uniformity in a forming and curing process of an organic passivation layer and to improve a barrier property to moisture and oxygen of the organic passivation layer. A composition for preparing an organic passivation layer comprises a water-soluble polymer having a hydroxyl group and aldehyde selected from dialdehyde or polyaldehyde. The water-soluble polymer is selected from water-soluble polyurethane, polyvinylalcohol, polyvinyl alcohol copolymerization polymer, water soluble acrylate resin, polyethylene glycol or their mixture. The organic thin film transistor comprises a substrate, gate electrode, organic insulating film, organic active layer, source/drain electrode and organic passivation layer.
Abstract:
본 발명은 지방족 고리계 고경도저온공정형 가용성 폴리이미드 광배향막의 제조방법에 관한 것으로서, 보다 상세하게는 지방족 고리계 산이무수물을 적정 비율 이상 포함하는 산이무수물과 방향족 디아민을 적정비율 이상 포함하는 방향족 디아민류를 용액 중합함으로써 제조된 신규한 가용성폴리이미드 광배향막 및 그의 제조방법에 관한 것으로서 해당 조성물은 저온공정성, 우수한 내열성, 표면경도, 투명성 및 편광자외선에 액정의 배향성을 제공하는 특징을 가지고 있다. 본 발명의 신규 액정배향막용 가용성폴리이미드들로 제조된 박막은 표면 조도가 낮고, 전도성 유리(ITO glass)에 대한 인쇄성이 우수할 뿐만 아니라 내열성 및 투명성이 매우 우수하며, 이들로부터 제작된 액정 셀은 0.1∼1.0° 범위의 낮은 선경사각 및 상온에서 98% 이상의 우수한 전압보유율을 제공하는 특징이 있다. 가용성폴리이미드, 광배향막, 플라스틱기판용, 고경도, 저온공정성, 고내열성, 투명성, 전압보유율, 선경사각
Abstract:
A surface treatment method of organic insulator capable of improving transistor property and organic thin film transistor using the same are provided to improve crystal property of organic semiconductor by using hydrophobic material on organic insulation film. A hydrophobic surface treatment layer is formed by reacting thiol compound on a surface of an organic insulation film. In the organic insulation film, unsaturated bonding is generated on the surface. The organic insulation film is made of polyimide or polyimide copolymer having the unsaturated bonding and mass average molecular weight of 5000~1000000. A reaction of the thiol compound and the organic insulation thin film surface is generated by contacting an organic insulator surface on group saturated into the thiol compound.
Abstract:
The method of manufacturing the organic thin film transistor is provided to improve the durability of the organic passivation and the element reliability. The method of manufacturing the organic thin film transistor comprises as follows. A step is for forming the organic passivation at the upper part of the organic layer transistor element. A step is for forming the hydrophobicity self-assembled monolayer on the surface of organic passivation. The organic passivation has -OH and made of water soluble polymer manufactured from monomer more than the first class. The hydrophobicity self-assembled monolayer is made of the compound selected from below chemical formula 1[R-SiX3]. In the equation, R is straight-chain or the branched-chain alkyl group of the C1~C100 which is or not substituted for the fluorine element or X is independently selected from the alkoxy radical of the halogen atom or C1~C5.
Abstract:
A low-temperature soluble polyimide resin blend composition is provided to improve the overall characteristics of an organic thin film transistor, particularly field effect mobility, by using the composition as an interlayer dielectric having reduced surface tension. A polyimide resin blend composition for a gate dielectric film of an organic transistor comprises 1-99 wt% of a soluble polyimide resin represented by the following formula 1, and 1-99 wt% of a soluble polyimide resin represented by the following formula 2. In the formulae, the formula A is at least one tetravalent group essentially including a specific aliphatic cyclic tetravalent group; the formula B is at least one divalent group; l is a natural number of 1-300; the formula C is at least one divalent group essentially including a divalent aromatic group having a pendant alkyl group; and m is a natural number of 1-300.
Abstract:
A low-temperature soluble polyimide resin blend composition is provided to improve the overall characteristics of an organic thin film transistor, particularly field effect mobility, by using the composition as an interlayer dielectric having reduced surface tension. A polyimide resin blend composition for a gate dielectric film of an organic transistor comprises 1-99 wt% of a soluble polyimide resin represented by the following formula 1, and 1-99 wt% of a soluble polyimide resin represented by the following formula 2. In the formulae, the formula A is at least one tetravalent group essentially including a specific aliphatic cyclic tetravalent group; the formula B is at least one divalent group; l is a natural number of 1-300; the formula C is at least one divalent group essentially including a divalent aromatic group having a pendant alkyl group; and m is a natural number of 1-300.
Abstract:
본 발명은 게이트 전극을 ITO나 금속으로, 유기 반도체를 활성층(active layer)으로, 유,무기절연층/금속나노입자/유,무기절연층의 메모리 삼중층(memory stack)을 게이트 절연막(gate insulating layer)으로, 일함수가 큰 금속을 소오스와 드레인 전극으로 사용한 비휘발성 메모리 유기 박막 트랜지스터(nonvolatile memory orgnic thin film transistor)에 관한 것으로서, 더욱 상세하게는 유리, 플라스틱, 실리콘 웨이퍼를 기판으로 하고, 상기 기판 위에 상기의 게이트 전극과 그 게이트 전극위에 상기의 메모리 삼중층을 게이트 절연막으로 형성하고, 상기 게이트 절연막 위에 소오스(source)와 드레인(drain) 전극을 형성하고, 상기 소오스와 드레인 전극 위에 유기 활성층을 가지는 비휘발성 메모리 유기 박막 트랜지스터 및 그를 제조하는 방법에 관한 것이다. 유기 박막 트랜지스터, 비휘발성 메모리, 게이트 절연막